HQST LifePO4 12V 100Ah Lithium Iron Phosphate User Guide

HQST LifePO4 12V 100Ah Lithium Iron Phosphate

This user manual offers a brief walkthrough of the unit’s features. Please keep the user manual in hand for future reference. Still, need help? Feel free to send us an email at [email protected]

IMPORTANT SAFETY INSTRUCTIONS

• Please read through all the labels on the battery and this user guide before the first use.
• When connecting batteries in series or parallel, read all the precautions about how to connect first, or you may damage the batteries.
• Keep the battery away from rain, splashes, and any wet locations.
• DO NOT short-circuit the battery.
• DO NOT reverse the polarity connection.
• DO NOT expose the battery to fire, heat sources, or direct sunlight.
• DO NOT dismantle or modify the battery yourself.
• DO NOT drop, crush, shake, strike, or penetrate the battery.
• Please use the specified charger to charge the batteries.
• Our batteries are assembled using 8 screws and waterproof glue. If you want to disassemble the batteries yourself, please ask the customer service team for directions on how to disassemble the batteries. But keep in mind that once the battery is disassembled, it cannot be restored to its original state of being.

SPECIFICATIONS

General

Battery type| Lithium iron phosphate (LiFePO4)
Rated capacity| 100Ah (1280Wh)
Rated voltage| 12.8V
Max. charging voltage| 14.6V
Max. discharging current| 100A
Max. charging current| 50A
Cycle lifespan| More than 3000 cycles at 80% DOD
Charging temperature range| 32°F~113F / 0°C~45°C
Discharging temperature range| 14°F ~140 F / -10°C ~60°C

Low temperature protection

| Charging: 23°F~41F/ 0°C±5°C
Discharging: -13°F~5°F / -20°C±5°C

High temperature protection

| Charging: 140F~158°F / 65°C±5°C
Discharging: 158F~176°F / 75°C±5°C

Storage temperature range

| -4°F~113°F / -20°C~45°C

(Store for 1-3 months)

-4°F~68°F / -20°C~20°C

(Store for 1 year)

Controller Setting ( for reference )
System voltage| 12V (x N)*
Boost charge voltage| 14.2V (x N)
Over-discharge recover voltage| 12.6V (x N)
Over-discharge voltage| 11.1V(xN)*
Dimension and Weight

**** Size (L X H X W)| 13.07 x 8.66 x 6.77 inches 332 x 220 x 172 mm Compatible with the Group 31 lead-acid battery case
Net weight| 25.11 lbs/ 11.39 kg

Note:
(x N)*: When it comes to a 24V(N=2) or 48V(N=4) system, the voltage should multiply by the number of series batteries.
When the battery is fully discharged at a continuous 1 00A, it cannot be recharged at 50A immediately, which will trigger high temperature charging protection.

TIPS FOR BETTER PERFORMANCE

How to Connect Battery

1. Please make sure all batteries that are connected meet the following criteria:
2. Batteries have the Same Voltage (V), Same Capacity (Ah), and are the Same Type (Lithium iron phosphate (LiFePO4)).
3. As the built-in battery management system (BMS) may vary between brands, we advise you to choose batteries from the Same Brand for connection.
4. For optimal performance, we kindly advise you to follow the requirements listed below:
5. Fully charge all ready-to-connect batteries.

• All battery interconnect cables should be the same wire gauge (AWG) and length, and come from the same brand. Otherwise, the impedance will be inconsistent, resulting in unbalanced charge and discharge perfor­mance.
• Connect your batteries one by one in series (up to 4 batteries) or in paral­lel (up to 4 batteries). Secure all cable connections between the cable lugs and terminals.
• When determining the cable size (AWG) for your system, there are two factors to consider:
• The size of the electrical load you want to power.
• The distance between the electrical load and your batteries.

For reference, see the following chart:

• Cables for Controller to Battery

Solar Input Current| 5A| 10A| 20A| 30A| 40A| 60A
---|---|---|---|---|---|---
Wire Cross Section Area (mm2)| 1.5| 2.5| 5| 8| 10| 12
WireAWG| 15| 13| 10| 8| 7| 6

• Cables for Inverter to Battery

Copper Conductor| Diameter (inches) Cable Size| Maximum Amperage
---|---|---
6AWG| 0.20| 115
4AWG| 0.23| 150
2AWG| 0.30| 205
1/0AWG| 0.37| 285
2/0AWG| 0.43| 325
4/0AWG| 0.56| 440

About Rated Power

• The max. rated power of this battery is 1280W.
• When connecting 2 batteries in parallel, the theoretical max. power is 1280W x 2 = 2560W. But this does not mean this battery bank can support all 2000W home appliances working normally via a 2000W inverter.
• The peak power of an AC motor appliance, such as an AC air conditioner or water pump, is double its rated power. For example, when using a 1500W AC air conditioner or water pump, it requires 2 x 1500W = 3000W of the battery bank and inverter to support normal working conditions.
• But please note that the peak power of some home appliances is 3 times the rated power. So you can consult the manufacturer for accurate peak power data.

How to Store Battery

• To store your battery, keep it at least 30%-50% charged. We recommend that you charge the battery every 6 months when not in use to prevent over-discharge.

DISCHARGE CURVE AT DIFFERENT TEMPERATURES (O.SC)

CHARGING PERFORMANCE (0. SC, 77°F/25°C)

CYCLE LIFE VERSUS DEPTH OF DISCHARGE (0. SC, 77°F/25°C)

WARRANTY

• HQST LiFeP04 batteries are covered by a 5-year limited warranty from the original purchase date. If you encounter any issues during usage, feel free to contact us at [email protected]
• We only provide after-sales service for products sold by HQST or retailers and distributors authorized by HQST. If you have purchased your unit through other channels, please contact your seller for more information about the return and warranty.

SUPPORT INFORMATION

• Need help? Feel free to send us an email at[email protected] Want to see more products? Visit the website [hqsolarpower.com](http://hqsolarpower.com)

Documents / Resources

| HQST LifePO4 12V 100Ah Lithium Iron Phosphate [pdf] User Guide
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