TTWEN 12V 100Ah LiFePO4 Battery Product Manual
Originate from TTWEN
Lithium Iron Phosphate (LiFePO4) Battery
Product Specification
Pack Battery
A TTWEN 12V 100Ah LiFePO4 Battery with 4000+ Deep Cycles Life.
Dimensions:
- Length: 332mm±2mm
- Width: 176mm±2mm
- Height: 221mm±2mm
Terminal & Post Bolts:
- Terminal Size: M8 (1.25mm Metric Thread)
- Post Bolts: M8 (1.25mm Metric Thread*14mm Bolt Length)
Cell Dimensions:
- Length: 118.9mm±0.5mm
- Width: 148.6mm±0.5mm
- Height: 52.3mm±0.5mm
Notice Before Using:
- Contact info@lifepo4store.com to activate the FIVE-YEARS WARRANTY.
- Pull out insulating plugs.
- Tightly screw in post bolts. Loose battery terminals can cause heat buildup and damage the battery.
- Put on insulating covers to avoid short circuits.
- Test the battery voltage with a multimeter. If below 12V, contact info@lanpwr.com.
- Fully charge the battery separately.
- Connect to use.
1. Things to Know Before Using
- Always put on insulating covers on post bolts to prevent short circuits.
- Install the battery upright with the post bolt facing up. Do not mount upside down without confirmation.
- Tightly screw in post bolts to prevent heat buildup.
- This battery is not intended for starting devices.
- Long-term Storage Suggestions:
- Temperature: Operate between -20°C to 60°C (-4°F to 140°F). Ideal storage temperature is 10°C to 35°C (50°F to 95°F). Store in a fireproof container away from children.
- Capacity: For longevity, store at a 50% charge level and recharge every three months if not in use.
2. Scope
This specification applies to the 12.8V 100Ah Li-ion rechargeable battery pack manufactured by Swalle Technology CO., LTD.
3. Battery-Pack Main Parameters
| NO | Items | Criteria | Remarks |
|---|---|---|---|
| 3.1 | Energy | 1280Wh | 0.2C charge discharge for voltage |
| 3.2 | Nominal Capacity | 100Ah | |
| 3.3 | Usable Capacity | 100Ah | |
| 3.4 | Nominal Voltage (V) | 12.8V | |
| 3.5 | Combination Method | 4S1P | |
| 3.6 | Charge Method | CC/CV | |
| 3.7 | Charge Voltage (V) | 14.4V±0.2V | |
| 3.8 | Internal Impedance | Battery: ≤15mΩ | AC 1KHz after standard charge |
| 3.9 | Recommend Charge Current | 20A(0.2C) | |
| 3.10 | Battery Management System (BMS) Board | 100Ah | |
| 3.11 | Max. Continuous Charge Current | 100A | Not recommended for long-term use |
| 3.12 | Max. Continuous Discharge Current | 100A | |
| 3.13 | Max. Discharge Current 3 Seconds | 190A | |
| 3.14 | Max. Continuous Load Power | 1280W | |
| 3.15 | Pulse current | 190A(3s) | |
| 3.16 | Cycle Life | ≥4000 times | |
| 3.17 | Battery Pack Case | Acrylonitrile Butadiene Styrene (ABS) Plastic | |
| 3.18 | Shipping Voltage Requirements | ≥12.8V | |
| 3.19 | Protection Class | IP65 | |
| 3.20 | Weight | 10.3kg/22.71lb | L13.07*W6.93*H8.7 inch |
| 3.21 | Dimension | L332*W176*H221 mm | |
| 3.22 | Temperature Range | Normal-Charge: 0°C to 50°C/32°F to 122°F Normal-Discharge: -20°C to 60°C/-4°F to 140°F Self-Heating Charge: -20°C~50°C/-4°F-122°F Self-Heating Discharge: -20°C-60°C/4°F-140°F Storage: -10°C to 50°C/14°F to 122°F |
4. Battery Configuration
| NO | Items | Criteria | Remarks |
|---|---|---|---|
| 4.1 | Gotion-manufactured Cell | 53148115-104Ah | LiFePO4 |
| 4.2 | BMS | ZP04S014-L4S-100A-100A | |
| 4.3 | Connector |
5. Battery Performance Criteria
5.1 Appearance
The battery should have no defects such as scratches or rust. The structure and dimensions should match the attached drawing. The battery must match well with the 12.8V 100Ah specification.
5.2 Measurement Apparatus
- Dimension Measuring Instrument: Precision scale of 0.01mm.
- Voltmeter: Inner impedance not less than 10 KΩ/Ν.
- Ammeter: Total external resistance including ammeter and wire less than 0.01Ω.
- Impedance Meter: Measured using a sinusoidal alternating current method (AC 1kHz LCR meter).
5.3 Standard Test Condition
Tests are conducted on new batteries within one month of shipment. Cells should not be cycled more than five times before testing. Tests are performed at 23±2°C and less than 75% relative humidity.
5.4 Charging Methods
Full charge condition: Constant current 0.1C, Constant voltage 14.6V for 16 hours at 23±2°C.
5.4.1 The Voltage When Charging & Discharging
The measured voltage during charging/discharging is not the real battery voltage. After disconnecting from the power source, the voltage will gradually adjust to its real value. To test the real voltage, disconnect all connections and let the battery rest for over 30 minutes.
Tips When Testing The Battery Voltage by A Multimeter:
- Put the red probe (+) tightly on the positive terminal and the black probe (-) on the negative terminal.
- Do not touch the metal part of the probes with your hands.
5.4.2 Battery Charging Logic
LiFePO4 battery charging is simpler than lead-acid batteries. It is recommended to select the LiFePO4 charging mode. If unavailable, refer to recommended parameters on Page 12.
5.4.3 LiFePO4 Battery Charging Mode
The charging process consists of two phases:
- CC (Constant Current) Phase (T1): The battery is charged with a constant current, and the voltage rises steadily until reaching the constant voltage setpoint.
- CV (Constant Voltage) Phase (T2): The battery maintains a constant voltage, and the current gradually decreases to a tail current of 6A (0.02C), at which point charging is complete.
5.4.4 Solar Panel
- Recommended Power: ≥900W.
- A 900W solar panel can fully charge the battery in one day with effective sunshine (4.5hrs/day).
- Charging efficiency depends on the duration and intensity of sunlight.
5.4.5 Controller
- Recommended Charging Current: 20A (0.2C) for ~5hr charging, 50A (0.5C) for ~2hr charging (to 97% capacity).
- Recommended Charging Mode: 14.6V LiFePO4.
5.4.6 Controller Settings
For manual controller setup, use the following parameters for LiFePO4 batteries:
| Charging Voltage | |||
|---|---|---|---|
| Charging | Charge/Bulk/Boost Voltage | 14.4V/14.6V | |
| Absorption Voltage | 14.4V/14.6V | ||
| Over Voltage Disconnect | 15V | ||
| Over Voltage Reconnect | 14.2V | ||
| Tail Current | 2A(0.02C) | ||
| Discharging | Under Voltage Warning | 11.6V | |
| Under Voltage Recover | 12V | ||
| Low Voltage Disconnect | 10.8V | ||
| Low Voltage Reconnect | 12.4V |
5.4.7 Battery Charger
- Use a 14.6V lithium iron phosphate (LiFePO4) battery charger.
- Recommended Charging Voltage: 14.2V to 14.6V.
- Recommended Charging Current: 20A (0.2C) for ~5hr charging, 50A (0.5C) for ~2hr charging (to 97% capacity).
- Tips: Connect the charger to the battery before connecting to the grid to prevent sparks. Disconnect the charger after fully charging.
5.4.8 Alternator/Generator
LANPWR batteries can be charged by an alternator or generator. For DC output, a DC-to-DC charger is needed. For AC output, use a suitable battery charger as recommended in the "Battery Charger" section.
- Recommend Charging Voltage: Between 14.2V to 14.6V.
- Recommend Charging Current: 20A (0.2C) for ~5hr charging, 50A (0.5C) for ~2hr charging (to 97% capacity).
5.5 How to Estimate the Battery Capacity
5.5.1 State of Charge (SOC)
SOC is estimated by residual voltage after resting for 30 minutes with no load. Voltage may vary slightly between batteries.
| CAPACITY | CHARGE VOLTAGE |
|---|---|
| 100% | 13.4V |
| 90% | 13.32V |
| 80% | 13.16V |
| 70% | 13.1V |
| 60% | 13.04V |
| 50% | 12.92V |
| 40% | 12.86V |
| 30% | 12.8V |
| 20% | 12.4V |
| 10% | 12.0V |
| 0% | ≤11.6V |
5.6 Series/Parallel Connection
5.6.1 The Premise of Connection
To connect batteries in series or parallel, ensure:
- Identical battery capacity (Ah) and BMS (A).
- Batteries are from the same brand.
- Batteries were purchased within one month.
5.6.2 Limitation for Series/Parallel Connection
Supports connecting up to 16 batteries: up to 4 in series for a 48V (51.2V) system, or up to 4 in parallel for a 400Ah system.
Series Connection Example: 48V (51.2V) 100Ah system using four 12.8V 100Ah batteries in series.
Parallel Connection Example: 12V (12.8V) 400Ah system using four 12.8V 100Ah batteries in parallel.
5.6.3 How to Connect Batteries
Battery series parallel prompts:
- Maximum series and parallel connections: 4S4P.
- Before connecting in series or parallel, ensure each battery has 100% capacity, voltage difference within 0.2V, and SOC within 5%.
- Maximum charging and discharging current in series: 100A.
- Maximum charging and discharging current in parallel: 200A.
5.6.4 Accessory Recommendation
- Battery-to-Battery Connection Cable: 2*6AWG Copper Cable.
- Total Input & Output Connection: Use two copper bars.
Connection Steps:
- Refer to pages 17-19 for connection instructions.
- Connect all positive output cables to one copper bar. (Note: If connecting in series, the positive terminal of one battery connects to the negative of another; do not connect the positive terminal to the copper bar in this case, or the series connection will fail.)
- Connect the positive (+) of the load to the same copper bar. Ensure the cable gauge supports the total system current.
- Connect the negative (-) of the battery system and the negative (-) of the load to another copper bar.
5.6.5 Step 1 Wear Insulating Gloves
Wear insulating gloves for protection during connection.
5.6.6 Step 2 Voltage Balancing Before Connection
To ensure optimal performance in series or parallel connections:
- Fully charge batteries separately (resting voltage ≥13.4V).
- Connect batteries in parallel and leave them together for 12-24 hours for voltage balancing.
5.6.7 Step 3 Battery-to-Battery Connection
- Connect Batteries in Series: Connect positive (+) to negative (-). After series connection, the system voltage doubles with each added battery. (e.g., two 12V 100Ah batteries in series result in a 24V (25.6V) 100Ah system).
- Connect Batteries in Parallel: Connect positive (+) to positive (+) and negative (-) to negative (-). After parallel connection, the system capacity doubles with each added battery. (e.g., two 12V 100Ah batteries in parallel result in a 12V (12.8V) 200Ah system).
- Connect Batteries Both in Series & Parallel:
- Connect batteries in parallel first.
- Then connect the paralleled battery systems in series.
Optimal Connection Method Recommendation:
For a 4P2S system (e.g., 24V (25.6V) 800Ah):
- Connect the positive (+) of batteries 1, 3, 5, 7 to one copper bar.
- Connect the positive (+) of the load to the same copper bar.
- Connect the negative (-) of batteries 2, 4, 6, 8 to another copper bar.
- Connect the negative (-) of the load to the same copper bar.
5.6.8 Step 4 Rebalancing Every 6 Months
It is recommended to rebalance battery voltage every six months, following Step 2 on Page 16, to address potential voltage differences.
5.6.9 Wiring Diagrams
2S2P Battery System (24V(25.6V)200Ah):
- Energy: 5120Wh
- Max. Continuous Charge / Discharge Current: 200A
- Max.Continuous Load Power: 5120W
2P4S Battery System (48V(51.2V)200Ah):
- Energy: 10240Wh
- Max. Continuous Charge / Discharge Current: 200A
- Max.Continuous Load Power: 10240W
4P2S Battery System (24V(25.6V)400Ah):
- Energy: 10240Wh
- Max. Continuous Charge / Discharge Current: 400A
- Max.Continuous Load Power: 10240W
5.7 Inverter Settings
- Method One (Recommend): Select "14.6V LiFePO4 Mode".
- Method Two: If Method One is unavailable, select "User Mode" and set the following parameters:
Charging Voltage Charging Charge/Bulk/Boost Voltage 14.4V/14.6V Absorption Voltage 14.4V/14.6V Over Voltage Disconnect 15V Over Voltage Reconnect 14.2V Tail Current 2A(0.02C) Discharging Under Voltage Warning 11.6V Under Voltage Recover 12V Low Voltage Disconnect 10.8V Low Voltage Reconnect 12.4V
These settings apply to common inverters (e.g., Victron, Renogy, Growatt, Xantrex, Go Power, Lux Power). If inverter parameters are special or do not correspond, contact info@lanpwr.com.
5.8 What to do When the Battery Stops Working?
If the battery stops working (cannot work, cannot be charged, or voltage < 9V), it is likely that the BMS has shut it off for protection. Try the following steps to activate it:
- General Steps:
- Cut off all connections from the battery.
- Leave the battery aside for 30 minutes. The battery should recover to normal voltage (>10V) and can be used after fully charged.
- Method 1: Use a charger with a 0V charging function to fully charge the battery.
- Method 2: Connect an 18V~36V solar panel to charge the battery for 3-10 seconds in sunny daytime.
If the battery cannot recover after these steps, activate it using one of the methods above, then fully charge it. It can then be used normally.
5.9 Common Performance
| NO | Items | Testing method and determinant standard |
|---|---|---|
| 1 | Charge Performance | Charge with 0.1C constant current to 14.6V, then constant voltage until current ≤ 0.02C at 23±2°C. Stop charging. |
| 2 | Discharge Performance | Charge with standard mode, rest 0.5h, discharge with 0.1C until voltage is 10V. Discharge time ≥5h. Cycle life required: 5 times. |
| 3 | Cycle Performance | Charge with 0.1C to 14.6V, then constant voltage until current ≤0.02C at 23±2°C. Rest 0.5h, discharge with 0.1C to 10V. Stop cycling if continuous discharge time < 3H. Cycle life required: ≥300 times. |
| 4 | Charged Storage Characteristics | Charge with 0.1C to 14.6V, then constant voltage until current ≤0.02C. Rest at 23±2°C for 28 days, then discharge with 0.1C to 10V. Discharge time required: ≥4.25h. |
| 5 | Storage Characteristics | For batteries < 3 months old, charge with 0.1C to 40-50% capacity. Store for 12 months at 20±5°C and 45-75% humidity. Then charge with 0.1C to 14.6V, constant voltage. Rest 0.5h at 23±2°C, then discharge with 0.1C to 10V. Discharge time required: 24h. Cycle life required: 5 times. |
5.10 Safety Performance
| NO | Items | Testing method and determinant standard |
|---|---|---|
| 1 | High Temperature Characteristics | Charge with 0.1C, place in oven at 65±2°C for 2h, then discharge with 0.1C to 10V at 23±2°C. Discharge time ≥4H. No deformation or smoking. |
| 2 | Low Temperature Characteristics | Charge with 0.1C, place in oven at -40±2°C for 4h, then discharge with 0.1C to 10V at -20°C. Discharge time ≥0.1h. No deformation or smoking. |
| 3 | Overcharge Protection Characteristics | After full charge with 0.1C, apply constant current and voltage supplier at 2x nominal voltage and current for 7h. No leakage, deformation, smoking, or explosion. |
| 4 | Over-discharge Protection Characteristics | After discharging with 0.1C to 10V at 23±2°C, connect load (nx300) and discharge for 7h. No leakage, fire, smoking, or explosion. |
| 5 | Short-circuit Protection Characteristics | After full charge with 0.1C, short circuit anode and cathode for 1h (resistance < 80±20mΩ) at 23±2°C. No leakage, deformation, smoking, or explosion. |
| 6 | Constant Humidity and Temperature Characteristics | Charge with 0.1C, place in oven at 40±2°C and 90-95% humidity for 48h. No deformation, leakage, rust, smoking, or explosion. Rest for 2h at 23±2°C, then discharge with 0.1C to 10V. Discharge time ≥3H. |
| 7 | Drop Test | After charging, rest for 1-4h. Drop onto concrete from 1m (6 tests total, each side once). Inspect voltage and appearance. Drop onto concrete from 1.5m (6 tests total, each side once). Inspect voltage and appearance. No leakage, fire, or explosion. |
5.11 Rest Period
Unless otherwise defined, rest for 30 minutes after charge and 30 minutes after discharge.
6. Storage and Others
6.1 Long Time Storage
For storage exceeding three months, store in a dry, cool place. Storage voltage should be 12.9-13.1V. Store at 23±2°C and 45-75% humidity.
6.2 Others
Matters not covered in this specification should be discussed between the customer and LANPWR.
7. Protection Circuit
| Item | Content | Criterion |
|---|---|---|
| Voltage | Charging voltage | DC: 14.6V CC/CV |
| Balance voltage for single cell | 3.40±0.025V | |
| Balance current for single cell | 36±10mA | |
| Current consumption | ≤70uA | |
| Current | Recommend charge current | ≤50A |
| Max continues discharge current | ≤100A | |
| Pulse current(time) | 190A (3S) | |
| Over Charge Protection | Over charge detection voltage | 3.65±0.025V |
| Over charge detection delay time | 0.5~1.5S | |
| Over charge release voltage | 3.50±0.05V | |
| Over Discharge Protection | Over discharge detection voltage | 2.50±0.05V |
| Over discharge detection delay time | / | |
| Over discharge release voltage | 2.80±0.10V | |
| Over discharge current detection | 250±50A | |
| Over Current Protection | Detection delay time 1 | 0.5~1.5S |
| Detection delay time 2 | 50~150mS | |
| Over charge current detection current | / | |
| Detection delay time | 0.5~1.5S | |
| Short Protection | Short Circuit Protection Current | 900-1500A |
| Detection delay time | 200~800uS | |
| Detection condition | Exterior short circuit | |
| Release condition | Cut load, Auto Recovery | |
| Temperature | Detect the temperature of the Mosfet | 90±3°C |
| Charging high temperature protection | 60±5°C | |
| Charging low temperature protection | 0±3°C | |
| Discharge high temperature protection | 70±5°C | |
| Discharge low temperature protection | / | |
| Temperature protection release condition | Drop to 50°C, charge | |
| Operating temperature range | -20~+60°C | |
| Storage temperature range | 0~45℃ | |
| Internal Resistance | Main loop electrify resistance | ≤2mΩ |
8. Appendix
Handling Precautions and Guideline For Li-ion Rechargeable Batteries
Preface
This document provides handling precautions and guidelines for Li-ion Rechargeable Batteries manufactured by Swalle Technology CO., LTD.
Note 1:
Customers needing other applications or operating conditions should contact Swalle Technology CO., LTD. in advance. Additional experimentation may be required.
Note 2:
Swalle Technology CO., LTD. is not responsible for accidents occurring under conditions not described in this document.
Note 3:
Swalle Technology CO., LTD. will inform customers of necessary improvements regarding proper use and handling.
Caution!
Do not use or store the battery in extremely hot conditions, such as direct sunlight in a car. This can overheat the battery, reduce performance, and shorten its service life.
If battery leaks and electrolyte gets into eyes, do not rub. Rinse with clean water and seek medical attention immediately. Electrolyte can cause eye injury.
Danger!
- Do not immerse the battery in water.
- Do not store near heat sources like fire or heaters.
- Do not use chargers other than those recommended by JHY.
- Do not reverse positive (+) and negative (-) terminals.
- Do not connect directly to wall outlets or car cigarette-lighter sockets.
- Do not put the battery in fire or apply direct heat.
- Do not short-circuit the battery with wires or metal objects.
- Do not pierce the battery casing with a nail or sharp object, or break it open with a hammer, or step on it.
- Do not strike, throw, or subject the battery to severe physical shock.
- Do not directly solder battery terminals.
- Do not attempt to disassemble or modify the battery.
- Do not place the battery in a microwave oven or pressurized container.
- Do not use the battery in combination with primary batteries or batteries of different capacity, type, or brand.
- Do not use the battery if it emits odor, generates heat, becomes discolored or deformed, or appears abnormal. If in use or charging, remove it immediately and discontinue use.
Related Documents
 |
TTWEN 24V100AH LiFePO4 Battery Product Manual - Specifications & Usage Guide Comprehensive product manual for the TTWEN 24V100AH Lithium Iron Phosphate (LiFePO4) battery. Includes specifications, charging methods, series/parallel connection guides, inverter settings, and troubleshooting tips. |