VENOM Stronghold 25 Amp DC Battery Charger Owner's manual

Brand: VENOM

Model: Stronghold 25 Amp DC Battery Charger

Category: Car battery chargers

Type: Owner's manual

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VENOM GROUP INTERNATIONAL

14028 N. Ohio Street

Rathdrum, Idaho 83858 USA

AUSTRALIA

PO Box 7325

Alexandria, NSW 2015

CUSTOMER SERVICE

800.705.0620

208.762.0620 (Outside USA)

[email protected]

/venomgroup /Venom_RC

/venomgroupintl

/venomgroup

OPERATING MANUAL

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stronghold

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25 AMP

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stronghold

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25 AMP

MANUAL DE FUNCIONAMIENTO • MANUELD'UTILISATION • BENUTZERHANDBUCH •

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1. Speciﬁcations

2. Exterior of the unit

3. Features

4. Cell Type Charge Parameters

5. Warnings and safety notes

6. Connecting the charger

7. Balance Socket

8. Watt hour application chart

9. Program ﬂow chart

10. Initial Parameter set up (Users’ set up)

11. Lithium battery (Lilo/LiPO/LiFe) program

11.1 Charging Lithium batteries

11.2 Charging Lithium batteries in balance mode

11.3 “FAST” Charging Lithium batteries

11.4 “STORAGE” Control Lithium batteries

11.5 Discharging Lithium batteries

11.6 Voltage balancing and monitoring during discharge

12. NiMH/NiCD battery program

12.1 Charging NiCD/NiMH batteries

12.2 Discharging NiCD/NiMH batteries

12.3 Charge-to-discharge & discharge-to-charge cycle NiMH/NiCD batteries

13. Pb (lead-sulphuric acid) battery program

13.1 Charging Pb batteries

13.2 Discharging Pb batteries

14. IR-mode™ Internal Resistance Test Program

15. Save Data Program

16. Load Data Program

17. Alternate charge screens

18. Warning and error messages

19. Glossary of terms

20. Warranty and service

21. Notes page

3-4

10-11

22-23

CONTENTS

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SPECIFICATIONS

Input Voltage:

Circuit Power:

Charge Current:

Discharge Current:

Current Drain for LiPO Balance:

NiCD/NiMH Cell Count:

Lithium Cell Count:

Pb Voltage:

Alarm Voltage:

Weight:

Dimensions:

11.0-26.0V

500W max charge / 25W max discharge

0.1-25.0A (0.1-10.0A for NiCD/NiMH)

0.1-5.0A

200mAh/cell

1-18 Series

1-6 Series

2-24V

Lower than 10V or greater than 26V

4lbs 1.25oz (1850g)

12.6x7.87x3.15 in (320x200x80mm)

Input power cable

(DC 11V - 26V)

Cooling Fan

LCD screen

(16chr. x 2 lines)

Batt type / Stop

To select main program

To stop the operation

Dec / Inc

To select sub program

To alter the value

Start / Enter

To resume or

start the operation

Charging lead connector

(4 mm banana female)

Temperature Sensor Port

Balance Port

[STRONGHOLD]

Safety Charging Box

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FEATURES

[Battery Charge Box]

Integrated battery charging box designed to help contain a battery in case of catastrophic failure. Box

will help contain debris, and ﬂame, while venting releases gases and smoke in a controlled manner.

[Operating Software]

The microprocessor controlled CPU has software with multiple levels of battery monitoring for

maximum safety. Error warnings include: input voltage warning, reverse polarity protection and

Lithium cell count input error warning.

[High Power Charge Circuit]

500-watt charge circuit can charge up to 18 NiCD/NiMH or 6 Lithium cells with a maximum current

of 25A. A temperature controlled internal cooling system keeps the whole operating system

working at maximum efﬁciency in a wide variety of conditions.

[High Voltage Input]

The Venom Stronghold DC Multi-charger was designed to accept a broad range of input voltage up

to 26V. Customers can now use a higher voltage, yet low current power supply, which will operate

more efﬁciently.

[Cell Balancer for Lithium]

A built-in monitoring circuit can check and regulate the voltage of individual cells in a Lithium

battery pack. It can monitor and balance packs in charge, discharge, and storage modes.

[Supports Multiple Lithium Chemistries]

Accepts three types of Lithium battery chemistries, including LiPO, LiIo, and LiFe.

[Lithium Storage and Fast Charge Modes]

Storage mode conditions Lithium batteries for long-term storage. Fast charge mode safely charges

Lithium batteries at high rates without risk of damaging the pack.

[Multiple Safety Guards]

Auto Charge current limit: When charging NiCD or NiMH batteries in Auto mode, you can set the

upper limit of charge current to avoid over-heating and damaging the pack.

[Capacity Limit]

If charging capacity reaches this limit before a pack peaks, charger will stop charging to prevent

over charging in case the battery is damaged and the charger does not detect the peak.

[Temperature Limit]

Using the included external temperature probe, a thermal shut down temperature can be set. This

will stop the charge or discharge process should a battery exceed the temperature limit to prevent

overcharging, ﬁre, or other damage.

[Safety Timer]

This will stop the charge or discharge process if the charger cannot detect a peak, or if the capacity

limit is not tripped.

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FEATURES (CONTINUED)

[Input Power Monitor]

Charging or discharging processes will stop if the input voltage is too low. This is to protect the

input source, usually a 12V car battery.

The chart below has all the basic charge parameters for different cell types. Actual

charge and discharge rates or voltages may vary by manufacturer or recommended cell

performance. Always consult with the manufacturer instructions for your speciﬁc battery

for proper charge parameters.

NiCD / NiMH

Lilo

LiPO

LiFe

Voltage Level: 1.2V/cell

Allowable fast charge current: 1C~2C

(Depends on the performance of the cell)

Discharge voltage cut-off level: 0.85V/cell (NiCD), 1.0V/cell (NiMH)

Voltage Level: 3.6V/cell

Max charge voltage: 4.1V/cell

Allowable fast charge current: 1C or less

Minimum discharge voltage cut-off level: 2.5V/cell or higher

Voltage Level: 3.7V/cell

Max charge voltage: 4.2V/cell

Allowable fast charge current: 1C or less

Discharge voltage cut-off level: 3.0V/cell or higher

Voltage Level: 3.3V/cell

Max charge voltage: 3.7V/cell

Allowable fast charge current: 4C or less (e.g. A123M1)

Discharge voltage cut-off level: 2.0V/cell or higher

Voltage Level: 2.0V/cell (Lead-acid)

Max charge voltage: 2.46V/cell

Allowable fast charge current: 0.4C or less

Discharge voltage cut-off level: 1.50V/cell or higher

CELL TYPE CHARGE PARAMETERS

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CHARGING WARNINGS

WARNING

1. Always use a charger speciﬁcally designed for the chemistry of the battery to be charged.

Never use NiCD or NiMH type chargers to charge LiPO batteries. Never use a LiPO type

charger to charge NiCD or NiMH batteries. Failure to do so will damage the batteries and

may cause ﬁre and personal injury. When charging NiMH batteries, you must use a linear

charger with peak detection. Do not use a timer charger. Charge battery at no higher than a

1C charge rate. To calculate your battery’s 1C charge rate, divide the battery capacity (mAh)

by 1000.

Example: 3000mah ÷ 1000 = 3amps, 4200mah ÷ 1000 = 4.2amps, etc.

2. Always charge batteries in a ﬁre proof container. Do not charge batteries on or near wood,

cloth, carpet, in your model, or on or near any other ﬂammable material. Keep a chemical ﬁre

extinguisher near by in case of ﬁre.

3. Never leave batteries unattended while charging. Always observe batteries when charging

so that you may react quickly to any problems that may occur.

4. If a battery is deformed, swollen or appears damaged, DO NOT CHARGE. Follow the disposal

instructions below to properly and safely dispose the battery.

Any time you have an accident with your model or if the battery swells “balloons” or if the

battery exceeds temperature guidelines, follow these safety steps:

a. Immediately remove the battery pack from your model or charger.

b. Place the battery in a non-ﬂammable, well ventilated area.

c. Observe the battery for 30 minutes from a safe distance.

d. After 30 minutes, if the pack appears stable, is not swollen and does not show any signs

of damage, return the battery pack to normal use with caution.

6. Do not let exposed battery wires touch each other. This may cause the battery to short and

potentially cause a ﬁre.

7. Store your batteries in a cool, dry place between 40-80 Fº / 4-26 Cº. Batteries must be stored

at 3.75-3.80 volts per cell to maintain capacity and pack life for LiPO batteries. Do not store

fully charged for longer than one week to prevent damage.

8. Do not assemble unmatched or dissimilar cells.

9. Store battery packs out of the reach of children and pets.

LIPO BATTERY DISPOSAL INSTRUCTIONS

* NOTE: Please contact Venom™ Customer Service prior to following the steps below:

1. Fill a bucket with enough water to submerge the battery pack completely.

2. Add salt to the water until no more salt will dissolve; the water is nowsaturated with salt.

3. Place the battery pack in the bucket and leave submerged in the salt water solution for 24 hours.

4. Remove the battery pack from the salt water and test the voltage.

5. If the voltage does not read 0.0 Volts, re-submerge and re-test untilthe voltage reads 0.0 Volts.

6. Once the battery pack has been discharged to 0.0 Volts, it is safe to dispose of in the trash.

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The Venom Stronghold 25 amp DC Multi-Charger comes with male 4mm bullet

connectors attached to the power input cables. These cables are appropriate

for attaching directly to most high quality AC to DC power supply units. Also

included are large alligator clips with matching 4mm female bullet connectors

for attaching directly to 12V car batteries. It is critically important that you use

either a fully charged 13.8V car battery or a high quality AC to DC power supply

in the range of 11-26V.

When hooking up the battery to be charged, always use high quality cables with

connectors of good quality and condition. Place the battery inside the charge

box and secure the lid with the latch. In the event of a catastrophic failure, this

will help contain ﬂames and debris.

Using Alligator

Clips attached

to car battery.

IMPORTANT

CONNECTING THE BATTERY

Before connecting a battery, it is absolutely essential to check one last time

that you have set the parameters correctly. If the settings are incorrect, the

battery may be damaged, and could even burst into ﬂames or explode. To avoid

short-circuits between the banana plugs, always connect the charge leads

to the charger ﬁrst, and only then to the battery. Reverse the sequence when

disconnecting the pack.

CONNECTING THE CHARGER

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The balance wire attached to the battery must be connected to the charger’s

balancing port. Take care to maintain correct polarity!

(Wiring diagram: see below.)

This photo shows the correct way to connect your battery to the Stronghold 25

amp DC Multi-Charger while charging in the balance charge program mode only.

NOTE:

The balance socket is a diagnostic connection only. Battery discharge leads

must be connected to allow for a proper charge connection.

WARNING

Failure to connect as shown in this photo will damage this charger.

To avoid short circuit between the charge lead, always connect the charge

cable to the charger ﬁrst, then connect the battery. Reverse the sequence when

disconnecting.

WARNING

The use of the Stronghold Solo charging box does not eliminate the risks of a

lithium polymer battery ﬁre. Users should always follow the safety warnings,

instructions and guidelines provided by their battery and charger manufacturers

in connection with this product.

BALANCE SOCKET

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Voltage Capacity (mAh) Watt Hours

7.4 3200 23.7

7.4 4000 29.6

7.4 5000 37.0

7.4 5800 42.9

7.4 8000 59.2

7.4 10000 74.0

11.1 2200 24.4

11.1 3200 35.5

11.1 4000 44.4

11.1 5400 59.9

11.1 6400 71.0

14.8 2200 32.6

14.8 3200 47.4

14.8 4000 59.2

14.8 5000 74.0

18.5 3200 59.2

18.5 4000 74.0

22.2 2200 48.8

22.2 2600 57.7

WILL NOT BE

PROPERLY CONTAINED

WILL NOT BE

PROPERLY CONTAINED

WILL NOT BE

PROPERLY CONTAINED

WILL NOT BE

PROPERLY CONTAINED

WILL NOT BE

PROPERLY CONTAINED

WILL NOT BE

PROPERLY CONTAINED

WATT HOUR APPLICATION CHART

NOTE FOR USE

The charge box of the Venom Stronghold 25 amp DC Multi-Charger is designed to

help contain up to a 60 Watt-hour battery. Packs larger than this may not be properly

contained due to the expansive volume of the pack during catastrophic failure.

Calculate Watt Hours

(Nominal Voltage x mAh)/1000 = Watt Hours

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PROGRAM FLOW CHART

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The Venom Stronghold 25 amp DC Multi-Charger has default

settings in the User Set menu that can be adjusted in this

ﬁrst step. The screen displays the following information

in sequence and the user can change the value of the

parameter on each screen.

When you want to alter the parameter value in the program, press the Start/

Enter button once. The value will start ﬂashing, and it can be changed by using

the INC or DEC buttons, and ﬁnally saved by pressing the Start/Enter button

once.

USER SETUP STARTING SCREEN

The screen displays the nominal voltage of a Lithium

battery. There are three kinds of Lithium batteries: LiFe

(3.3V), LiIO (3.6V) or LiPO (3.7V). It is very important to check

the battery and set up correctly for the chemistry type. If it

is different from the correct value, the battery may explode

during the charge process.

The Venom Stronghold 25 amp DC Multi-Charger recognizes

the cell count of Lithium batteries automatically at the

beginning of the charge or discharge process to avoid

erroneous settings by the user. The Stronghold charger can recognize a deeply

discharged battery incorrectly. To prevent the error, you can set the time term

to verify the cell count by the processor. Normally, 10 minutes is enough to

perceive the cell count correctly. For a battery of larger capacity, you may

extend the time term. If you set the time term too long for a battery of smaller

capacity, the charge or discharge process may ﬁnish within the time term

with the erroneous cell count. This may cause fatal results. If the processor

recognizes the cell count incorrectly at the beginning of the charge or discharge

process, you may extend the time. Otherwise use the default value.

DELTA PEAK OF NICD AND NIMH BATTERY

This is the setting to set the sensitivity for the charger to

detect the peak on a NiCD or NiMH battery. The effective

value ranges from 5 to 20 mV per cell. If the trigger

voltage is set higher, there is a danger of overcharging the

battery. If it is set lower, there is a possibility of premature

termination. Please refer to the technical speciﬁcation of

the battery. (NiCD default: 12mV, NiMH default: 7mV)

USER SETUP

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USER SETUP (CONTINUED)

An optional feature to protect the battery is the external

temperature probe. The temperature cut-off can be On or Off.

If it is On, set the maximum temperature at which the charger

should allow battery to reach during charge. Once a battery

reaches this temperature during charge, the process will be

terminated to protect the battery.

When using the battery cycle feature of charging and

discharging, a battery will become warm after the charge

or discharge period. This program can insert a time delay to

occur after each charge and discharge process to allow the

battery adequate time to cool down before being subjected to

the next process. The value ranges from 1-60 minutes.

When you start a charge process, the integral safety

timer automatically starts running at the same time. This is

programmed to prevent overcharging the battery if it proves

to be faulty, or if the termination circuit cannot detect that

the battery is full. The value for the safety timer should be

generous enough to allow a full charge of the battery.

This program sets the maximum charge capacity that will

be supplied to the battery during charge. If the delta peak

voltage is not detected nor the safety timer expired for

reason, this feature will automatically stop the process at the

selected capacity value.

The beep sounds every time a button is pressed to conﬁrm

your action. The beep or melody sounds at various times

during operation to alert different mode changes. These

audible sounds can be On or Off.

This program monitors the input voltage of the source. If the

voltage drops below the value you set the operation forcibly

terminated to protect the input source.

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These programs are only suitable for charging and discharging Lithium batteries

with a nominal voltage of 3.3V, 3.6V and 3.7V per cell. Lithium batteries use a

charge technique termed constant voltage (CV) and constant current (CC). The

charge current varies according to the battery capacity and performance. The

ﬁnal voltage of charge process is also very important. It should be precisely

matched to the charge voltage of the battery. They are 4.2V for LiPO, 4.1V for

LiIo, and 3.6V for LiFe. The charge current and nominal voltage as for cell count

set on the charge program must always be correct for the battery to be charged.

To alter a parameter value in the program, press Start/Enter button to make it

ﬂash then change the value with INC or DEC button. The value will be stored by

pressing Start/Enter button once.

CHARGING LITHIUM BATTERY

The left side of the ﬁrst line shows the type of battery

you select in the User Set menu. The value on the left

side of second line sets the charge current and the value

on the right side of second line sets the voltage of the

battery pack.

After setting the current and voltage press Start/Enter

button for more than 3 seconds to start the process.

Charge current : 0.1-25A, Voltage: 1-6 Series

After pressing start, the charger will display the number

of cells you set up and the processor detects. “R” shows

the number of cells recognized by the charger and “S” is

the number of cells selected by the user on the previous

screen. If both numbers are identical you can start

charging by pressing Start/Enter button. If not, press the

Batt Type/Stop button to go back to previous screen.

Carefully check the number of cells of the battery pack

and then press Start/Enter to charge again.

The screen shows the real-time progress during charge

process. To stop charging press Batt Type/Stop button

once.

LITHIUM BATTERY PROGRAM (LIPO/LIIO/LIFE)

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BALANCE CHARGING LITHIUM BATTERY

This feature will charge while equalizing all the

individual cell voltages within the pack. This differs from

the regular charge mode, which only looks at the total

battery pack voltage. The battery pack to be charged

should be connected to the suitable balance port of the

cell balance block. You also need to connect the main

battery output plug to the output of the charger.

The left side of the ﬁrst line shows the type of battery

you select at the users setting. The value on the left

side of second line sets a charge current and the value

on the right side of second line sets the voltage of the

battery pack.

After setting the current and voltage press Start/Enter

button for more than 3 seconds to start the process.

Charge current: 0.1-25A, Voltage: 1-6 Series

After pressing start, the charger will display the number

of cells you set up and the processor detects. “R” shows

the number of cells recognized by the charger and “S” is

the number of cells selected by the user on the previous

screen. If both numbers are identical you can start

charging by pressing Start/Enter button. If not, press the

Batt Type/Stop button to go back to previous screen.

Carefully check the number of cells of the battery pack

and then press Start/Enter to charge again.

The screen shows the real-time progress during charge

process. To stop charging press Batt Type/Stop button

once.

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Lithium charge proﬁles are set so the feeding current gradually reduces near the end of

the charge to maintain the constant voltage. (CV)

To ﬁnish the charging process faster, this program shortens the amount of time for the CV

process and ends earlier. The charging current will go to 1/5 from the initial value to end

the process while the normal Lithium charge process reduces to 1/10 during the CV term.

The ﬁnal charged capacity will be slightly less than if using the regular charge feature,

and charge time is greatly reduced.

You can set up the charging current and the voltage of the

battery pack being charged. As you press Start/Enter button

the voltage conﬁrmation will be displayed. Then if you conﬁrm

the voltage and current, press Start/Enter button again to start

charging.

The screen shows the real-time progress during fast charge

process. To stop charging, press Batt Type/Stop button once.

STORAGE MODE FOR LITHIUM BATTERY

Lithium batteries, if they are to be stored for a long time, need to be conditioned and

have their voltage set to a prescribed level to maintain long life. If stored fully charged

for a long period of time, packs will increase in internal resistance, and lose power, or

capacity. Use the storage feature for batteries that will be stored for more than 30 days.

This program will determine to charge or discharge the battery to the storage voltage

depending on the battery at its initial stage. They are different from the type of Lithium

battery. 3.75V for LiIo, 3.85V for LiPO, and 3.3V for LiFe per cell. If the voltage of battery

at the start is over the storage voltage, the program will start to discharge.

You can set up the current and the voltage of the battery pack

to be charged. The current will be used to charge or discharge

the battery to reach the storage voltage.

The screen shows the real-time progress during storage

process. To stop charging, press Batt Type/Stop button once.

FAST CHARGING LITHIUM BATTERY

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DISCHARGING LITHIUM BATTERIES

The value of discharge current on the left side of the

screen may not exceed 1C for a maximum safety and the

ﬁnal voltage on the right should not be under the voltage

level that is recommended by the battery manufacturer to

avoid deep discharging.

To start the discharge, press Start/Enter button for more

than 3 seconds.

Discharge current: 0.1-5A

The screen shows the real-time progress during

discharge. To stop charging, press Batt Type/Stop button

once.

VOLTAGE BALANCING AND MONITORING DURING DISCHARGE

The processor monitors the voltage of individual cells during storage mode

and discharge of a lithium battery pack. With the balance block attached to the

balance plug of the battery, it will equalize the voltage of each cell during the

storage and discharge function.

If the voltage of any one or more cells varies abnormally during the procedure,

it terminates the process automatically with the error message “Battery Voltage

Cell Low Vol”. If this happens, the battery pack contains the bad cell, or the bad

connection of the cable plug. You can easily know which

one cell is bad by pressing INC button at the time of the

error message.

The processor detected the voltage of one cell in the

Lithium pack is too low.

In this case, the 4th cell is bad. If there is a connection

break in the cable or plug, the voltage value may show

zero.

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This battery charge proﬁles for NiMH (Nickel Metal Hydride) or NiCD (Nickel

Cadmium) batteries are commonly used in R/C vehicle applications. To alter the

value on the display, press Start/Enter button to make it ﬂash then change the

value using INC or DEC button. The value will be stored by pressing the Start/

Enter button once.

To start the charge process, press Start/Enter button for more than 3 seconds.

CHARGING NICD/NIMH BATTERY

For this program, only the charge current needs to be set. In “Aut” mode, you

need to set the upper limit charge current to avoid too high of charge current

that may damage the battery. Some batteries of low impedance and small

capacity can lead to the higher charge current by the processor at the automatic

charge mod. In “Man” mode, it will charge the battery

with the charge current set by the user in the display

screen. Each mode can be switched by pressing the INC

and DEC button simultaneously when the current ﬁeld is

blinking.

The screen shows the real-time progress during charge.

To stop charging press Batt Type/Stop button once.

NIMH/NICD BATTERIES

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DISCHARGING NICD/NIMH BATTERY

Set discharge current on the left and the ﬁnal voltage

on the right. The discharge current ranges from 0.1-5A

and the ﬁnal voltage ranges from 0.1-25V. To start the

process, press Start/Enter button more than 3 seconds.

Typical discharge voltage for NiCD/NiMH batteries is .9V

per cell. For 6 cell battery it is .9 x 6 = 5.4V ﬁnal voltage.

The screen shows the real-time progress during

discharge. You can alter the discharge current by

pressing Start/Enter button during the process. Once you

change the current value with the INC or DEC button,

store it by pressing the Start/Enter button again. To stop

discharging, press Batt type/Stop button once.

CYCLING NICD/NIMH BATTERIES

This program can be used to charge then discharge, or

discharge and then charge NiCD/NiMH batteries. Set

the sequence on the left and the number of cycles on the

right. You can use this function for balancing, refreshing

or breaking in a battery. To avoid excess heat build up in

the battery during each charge or discharge sequence,

there is a “waste time” that can be set in the User Set

program menu, which is a brief cool off period. Cycle

sequences can range from 1-5.

To stop the process, press Batt type/Stop button once.

You can alter the discharge or charge current by

pressing Start/Enter button once during the process,

using the INC or DEC to change the setting, and the

Start/Enter button to save the setting. An audible alarm

will sound indicating the end of the cycle sequence.

At the end of the process you can view the charged or

discharged capacity of the battery. Press the INC or DEC

button and the screen will display the results of each

cycle.

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This program is for charging Pb (lead acid) batteries with a nominal voltage

from 2-24V. Pb batteries are totally different from NiCD or NiMH batteries.

They can only deliver relatively low current compared to their capacity, and

similar restrictions apply to charging. The optimal charge current will be 1/10

of the capacity. Pb batteries must not be charged rapidly. Always follow the

instructions supplied by the battery manufacturer.

Change the parameters of charging by pressing the Start/Enter button to make

it ﬂash. Then change the value with the INC or DEC button. The value will be

stored by pressing Start/Enter button once.

Set up the charge current on the left and the nominal

voltage of the battery on the right. The charge current

ranges from 0.1-10.0A. The voltage should match the

battery being charged. Start the charge process by

pressing Start/Enter button for more than 3 seconds.

The screen shows the real-time progress during charge.

To stop charging, press Batt Type/Stop button once.

DISCHARGING PB BATTERY

Set discharge current on the left and the ﬁnal voltage on

the right. The discharge current ranges from 0.1-5.0A. To

start the process, press Start/Enter button for more than

3 seconds.

The screen shows the real-time progress during

discharge. You can alter the discharge current by

pressing Start/Enter button once during the process

using the INC or DEC to change the setting, and the Start/

Enter button to save the setting.

PB (LEAD ACID) BATTERY

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BATTERY INTERNAL RESISTANCE TEST MENU

This function allows the user to check the internal resistance of lithium batteries.

This is helpful as it allows the user to track the health of the battery by checking

for increased pack resistance as the battery ages. Attach the cell balance block

to the balance plug on the battery, and the main pack leads to the charger for

this test.

Interface of the Internal Resistance Testing.

Press Start/Enter button to start the test.

Displays individual cell Internal Resistance (IR).

Press INC button to view total battery pack IR. Pressing

INC again will return to the individual cell IR.

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VENOM Stronghold 25 Amp DC Battery Charger Owner's manual

Brand: VENOM

Model: Stronghold 25 Amp DC Battery Charger

Category: Car battery chargers

Type: Owner's manual

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VENOM Stronghold 25 Amp DC Battery Charger Owner's manual

VENOM Stronghold 25 Amp DC Battery Charger Owner's manual

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