GoKWh 12 and 24V Series LiFePO4 Battery User Manual
- June 13, 2024
- GoKWh
Table of Contents
GoKWh 12 and 24V Series LiFePO4 Battery
Important Safety Instructions
DISCLAIMER
Please read all specifications, usage, storage conditions, and warnings on
this document before use. Always adhere to our handling and usage directions
for this battery pack. Misuse of batteries can cause the battery to
malfunction, degrade and reduce its capacity or life expectancy, overheat,
explode, or become a fire hazard. Customers are responsible for the proper use
and storage of this battery pack which is outlined on this document. If at any
point, the battery excessively overheats, leaks, etc, or does not function as
stated, or is visibly damaged; DO NOT USE. Please contact our support team for
further assistance. We do not bear responsibility for any damages caused by
the misuse of this battery accidental or otherwise.
WARNINGS
- DO NOT immerse the battery in water or allow it to get wet.
- DO NOT use or store the battery near sources of heat such as a fire or heater.
- DO NOT reverse the positive (+) and negative (-) terminals.
- DO NOT connect the battery directly to wall outlets or car cigarette-lighter sockets without proper charging equipment. DO NOT allow exposed ends of cables connected to opposite terminals to touch.
- DO NOT put the battery into a fire or apply direct heat.
- DO NOT use the battery if the battery casing has been pierced, broken, cracked, or otherwise visibly damaged. DO NOT forcibly open the battery casing for any reason.
- Avoid severe physical shock. Do not throw the battery or heavily strike the battery in any way. Do not put excessive pressure or step on the battery.
- Never solder anything directly to the battery terminals.
- DO NOT attempt to disassemble or modify the battery in any way.
- DO NOT place the battery in a microwave oven or pressurized container.
Product Overview
Battery Dimensions:
Terminal Size: M8 (1.25mm Metric Thread)
Post Bolts: M8 (1.25mm Metric Thread ” 16mm Bolt Length)
(The bolts can be replaced with M8 bolts of other lengths based on actual
needs)
Specification
Battery Connection
Safe and reliable installation requires trained and certified technicians.
Therefore, the purpose of this section is only to serve as a guideline as all
scenarios cannot be covered.
Preparation
Before the installation and operation of the battery, it is recommended to have the following equipment or tools available:
- Proper Protective Equipment
- Insulated Tool(s)
- Multimeter
- Battery Cable
- Battery Charger / Charge Controller
Inspection
Please check for visible damage including cracks, dents, deformation, and
other visible abnormalities. The top of the battery and terminal connections
should be clean, free of dirt and corrosion, and dry. If any problems are
detected with the battery, please contact us for assistance. Refer to the last
page of the manual for contact information.
Cable Sizing
Battery cables (sold separately) should be appropriately sized to handle the
expected load. The above values are from the NEC Table 310.15(B)16 for copper
cables rated at 75°C (167°F), operating at an ambient temperature of no more
than 30°C (86°F). Lengths in excess of 8 feet (1829 mm) may require heavier
gauge cable to avoid excess voltage drop in undersized wiring.
Battery Terminal
The depths of the female battery terminal threads are no more than 12mm.
Consider this when determining the proper bolt length to secure bus bars,
cable lugs, and any washers that will be affixed to the terminal connection pad.
If too much torque is applied to a bolt, the female threads of the battery
terminal will be stripped and the damage will not be covered under warranty
due to misuse of the product. Consider the 12mm thread depth when selecting
your bolts so that they do not bottom out. Conversely, a minimum of 3 threads
must be engaged before applying 8lb-ft of torque so as to not damage the
threads. Please refer to the following table for the ampacities of copper
cables with different gauge sizes.
Connecting Batteries in Banks
CAUTION
- The batteries pack support max 4S or 4P, but in practical applications, consumers need to calculate based on their own load situation.
- The maximum voltage after series and parallel connection of battery packs should less load voltage.
- The load current should be less than the recommended current of the battery pack after series and parallel connection.
- It is recommended to balance the voltage before using it in series or parallel.
- DO NOT string batteries with different chemistries, brands, models, rated capabilities, or nominal voltages in parallel.
- In parallel battery banks, the cables between each battery should be of equal length to ensure that all batteries in the system can work equally together.
- The built-in BMS of the battery pack only protect and balance the internal battery cells. If the battery pack is connected in series or parallel, if you want to achieve better protection and balance, you can additionally install an external BMS control.
Battery Charging
LiFePO4 Batteries perform a 2-stage charging algorithm called “Constant
Current/-Constant Voltage” (CC/CV).
The standard LiFePO4 profile is 0.2C CC charge to 14.2V, and then, CV at 14.4V
charge until the charge current declines to <=0.05C.
The recommended max. charging current for a 100Ah LiFePO4 battery is 50A
(0.5C). A faster charge of 100A (1C) may be used as necessary, however,
regularly charging your battery this way may shorten its life and subsequently
its total capacity due to the extra heat generated during this process.
We do not recommend using any other types of chargers for LiFePO4 batteries,
such as SLA and Gel chargers.
Battery Storage
-
Temperature
The battery can be operated at temperatures of -10~45°C (14~113°F), and a temperature between 10℃ to 35℃(50℉ to 95℉) is ideal for long-term storage. Store in a fireproof container and away from children. -
Capacity
For a longer-lasting product, it is best to store your battery at a 50% charge level and recharge every three months if it is not going to be used for a long time.
Troubleshooting
If any problems occur during the battery operation, please refer to the following instructions or contact us for assistance
Warranty
All GoKWh 12V and 24V series LiFePO4 batteries come with 5-year manufacturer’s
defect warranty from the date of battery purchase.
This warranty covers the following 12V and 24V Series LiFePO4 battery models:
*Note: All batteries are fully tested before being shipped.
5-Year Warranty for After-Sales Service
Warranty is a guarantee against manufacturer defects only.
GoKWh warrants this battery to be free from manufacturer defects for 5 years.
lf for some improbable circumstance the battery is defective, we will replace
the battery. The following situation is not covered by the warranty:
- Batteries that have been poorly maintained, incorrectly charged, reversed polarity, improperly installed, stored and used in excessive heat, physical damage, fire, freezing, water damage, tampering, damage to terminals, failure to maintain proper battery charge or use in excess of rated charge/discharge cycles.
- Loss or damage due to force majeure or external causes, misuse, accident, negligence, unauthorized modification or repair.
- Warranties apply only to the original owner and are not transferable. We will verify your purchase before processing any warranty claims or returns.
- The buyer intentionally conceals or fails to cooperate in providing usage information.
GoKWh has a team of technicians to provide technical support if needed. Proof of purchase and your usage will be requested. The customer is responsible for ship-ping costs. If we deem the product manufacturer defective, we will cover the replacement shipping costs.
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