Shenzhen Topband Battery Co., Ltd
A professional manufacturer of LiFePO4 battery / lithium iron phosphate, dedicated to designing, researching, manufacturing, and exporting LiFePO4 batteries( cell & pack & energy storage system) to
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1. General Information
This specification defines the performance of rechargeable LiFePO4 battery pack manufactured by TB4812F-L110A SHENZHEN TOPBAND BATTERY CO.,LTD describes the type, performance, technical characteristics, warning and caution of the battery pack.
2. Battery Specification(@ 25±5℃)
| Series No. | Items | Characteristic |
| 2.1 | Normal capacity(Ah) | 12 |
| 2.2 | Normal energy(wh) | 576 |
| 2.3 | Normal voltage(V) | 48 |
| 2.4 | Dimension(mm) | 155*110*245 |
| 2.5 | Weight(Kg) | 6 |
| 2.6 | Standard charging voltage(V) | 54 ~ 55 |
| 2.7 | Floating charging voltage(V) | 52.5 ~ 53.5 |
| 2.8 | Discharge voltage(V) | 39 ~ 55 |
| 2.9 | Max constant charge current(A) | 12 |
| 2.10 | Allowed charge current(A) | 4 |
| 2.11 | Max constant discharge current(A) | 18 |
| 2.12 | Allowed charge current(A) | 12 |
| 2.13 | Peak discharge current(A) | 30A@0.5s |
| 2.14 | Communication | RS485 |
| 2.15 | IP rating | IP67 |
| 2.16 | Operation temperature | charging:0～45℃ |
| discharging:-20～60℃ | ||
| 2.17 | Humidity | 0~85% |
| 2.18 | Self-discharging | ≤3%/month; ≤15%/year |
| 2.19 | Storage environment | 1 month:-20～60℃, 5～75%RH |
| 6 month:-10～45℃, 5～75%RH | ||
| 1 year:10～25℃, 5～75%RH | ||
| 2.20 | SOC for outgoing | 50%~65% |
| 2.20 | Cycles | ＞1200 @25℃ |
| 2.21 | comply with standards | UN38.3, IEC62619 |
3. Electrical Characteristics & Test Condition
| NO. | Items | Criterion | Condition | |
| 3.1 | Normal capacity | 12Ah | After Normal charge, discharge @1C current to the end of discharge voltage. | |
| 3.2 | initial IR | ≤65mΩ | @50% SOC @1kHz AC internal resistance test instrument. | |
| 3.3 | Short circuit | Auto cutoff load when | Connect the positive and negative of this battery pack through a lead with 0.1Ω resistance. | |
| 3.4 | Cycle life @DOD80% | ≥1200 cycles | After Normal charge,discharge @1C current discharge | |
| 3.5 | Discharge temperature characteristic @0.2C | -20℃(6h) | ≥70% |
Capacity @specified temperature /Capacity @ 25℃
=the percentage accord with criterion |
| 0℃(6h) | ≥80% | |||
| 23℃(4h) | ≥100% | |||
| 53℃(4h) | ≥95% | |||
| 3.6 | Capacity retention rate | remain capacity ≥96% | After normal charge, store the battery @25±5℃ for 28days, then discharge capacity @0.2C,the retention capacity accord with criterion. | |
4. User guide/Production dimension
5.Storage and delivery
*The battery should be stayed in the warehouse 15~35℃ where it’s dry, clean, shade, and well-ventilated.
*The battery should be stored in 50% SOC during transportation.
*The battery need to be charge every 6 months if our of use.
*Keep the battery against dropping, serious stacking and turning over during loading, and keep face up.
6. Caution and attention
Please read and follow the handling instructions before use. Improper use may cause heat, fire, rupture,
damage or capacity deterioration of the battery. SHENZHEN TOPBAND BATTERY CO.,LTD. Describes is
not responsible for any accidents caused by the usage without following our handling instructions.
*Battery must be far away from heat source, high voltage, and no exposed in sunshine for long time.
*Never throw the battery into water or fire.
*Never reverse two electrodes when use the battery
*Never connect the positive and negative of battery with metal.
*Never knock, throw or trample the battery.
*Never disassemble the battery without manufacturer's permission and guidance.
*Never use mixed with other type of battery
*Keep the battery against high temperature. Otherwise it will cause battery heat, get into fire or lose some
function and reduce the life.
*When battery run out of power, please charge your battery timely (≤15days).
*Please use the matched or suggested charger for this battery.
*If battery emit peculiar smell, heating, distortion or appear any abnormity, please stop using.
*If the battery leaks and get into the eyes or skin, do not wipe, instead, rinse it with clean water and see
doctor immediately.
*Please far away from children or pets.
*Do not put disuse battery into a fire or water.
*The battery cannot support to connect in series or parallel, please contact factory if needed.
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