Flash Sale For USA DiySolarForum Users! >> Click to Check >>

Home

Contact Us

Downloads

Reseller Login

Aftersale&Forum

Battery Pack Information Lookup

Get Data of Your Gobel Power Battery
Decode
GP-SR1-PC200 Premium Example: GPEV280H240520R1006
GP-SR1-PC200 Standard Example: GPHC280H240401R1003
GP-LA12-280AH Standard Example: GDHC280H240312R1401
More Examples
SN Capacity (Ah) Max Charge Voltage (V) Min Discharge Voltage (V) BMS
GPRP280L231127R2903 287.00 56.91 44.43 GP-PC200 BMS
GPEV280H230616R1026 301.00 57.77 42.67 GP-PC200 BMS
GPEV280H231220R1029 304.00 58.00 43.00 GP-PC200 BMS
GPRP280L231012R1305 290.00 57.70 40.11 GP-PC200 BMS
GPEV280H240323R1011 306.00 57.99 42.10 GP-PC200 BMS
GPEV280H240401R1031 303.00 57.99 42.67 GP-PC200 BMS
GPEV280H240115R1004 303.00 58.00 41.93 GP-PC200 BMS
GPEV280H231220R1004 297.00 58.00 42.36 GP-PC200 BMS
GPEV280H231220R1021 295.00 58.00 43.37 GP-PC200 BMS
GPEV280H240105R1024 300.00 58.00 44.37 GP-PC200 BMS
GPEV280H230616R1013 303.00 56.72 41.95 GP-PC200 BMS
GPEV280H240124R1005 300.00 58.00 42.08 GP-PC200 BMS
GPEV280L230801R1901 286.00 57.26 40.34 GP-PC200 BMS
GPEV280H231123R1008 303.00 57.65 41.65 GP-PC200 BMS
GPEV280H240401R1027 308.00 57.95 42.87 GP-RN200 BMS
GPEV280H240105R1013 302.00 58.00 41.54 GP-PC200 BMS
GPEV280H240314R1005 299.00 57.99 44.68 GP-RN200 BMS
GPEV280L230921R2101 288.00 57.86 41.18 GP-PC200 BMS
GPEV280H231204R1004 302.00 57.87 42.30 GP-PC200 BMS
GPEV280H240105R1033 301.00 58.00 43.15 GP-PC200 BMS
Sample Data From a Battery

Pack SN:GPRP280L231113R3201
Pack Type: 51.2V LiFePO4 Battery
Pack Grade: Standard
BMS Type: GP-PC200 BMS
Balancer Type: 4A Bluetooth Active Balancer
Heater: With Heater
Cell Type: REPT280
Cell Grade: LSEV
Cells Connection: 16S1P
Pack Test Result

Full Capacity: 288.00 Ah (14.75 kWh)
Max Charge Voltage: 57.99 V
Min Discharge Voltage: 40.93 V
Charge Test Method
  • Charging at a constant current of 100A, with a maximum charging voltage of 55.5V.
  • Charging at a constant voltage of 55.5V, with a cutoff current of 40A.
  • Charging at a constant current of 40A, with a maximum charging voltage of 58V.
  • Document the maximum charging voltage when the voltage of a single cell reaches 3.65V.
  • * Tested without deliberated active balance procedure.
Discharge Test Method
  • Discharging at a constant current of 100A.
  • Document the minimum discharging voltage when the voltage of a single cell reaches 2.5V.
  • * Please be aware that the charge/discharge curve and capacity of batteries can vary with changing temperatures throughout the seasons. In winter, tested capacity will be relatively lower.
Charge/Discharge Curve
(Based on GPRP280L231113R3201 Test Data)

Cells Information

Cell Id Label Capacity (Ah) OCV1 (mV) OCV2 (mV) OCV3 (mV) Test Date
1 1 #7:82 289.07 2,602.5 3,375.2 3,183.5 2023-11-12
2 7 #7:147 288.52 2,626.0 3,374.4 3,180.4 2023-11-12
3 8 #7:131 288.75 2,601.8 3,379.3 3,179.6 2023-11-12
4 41 #7:21 288.37 2,620.2 3,374.1 3,181.9 2023-11-12
5 43 #7:142 288.37 2,615.3 3,382.7 3,184.8 2023-11-12
6 55 #7:52 288.81 2,626.5 3,367.2 3,182.4 2023-11-12
7 62 #7:1 288.87 2,630.7 3,376.2 3,184.2 2023-11-12
8 64 #7:49 289.17 2,619.0 3,380.5 3,187.1 2023-11-12
9 86 #7:29 289.18 2,626.7 3,371.9 3,187.1 2023-11-12
10 106 #7:53 288.68 2,629.7 3,370.8 3,182.0 2023-11-12
11 107 #5:78 288.72 2,631.4 3,389.3 3,184.8 2023-11-12
12 124 #7:127 289.49 2,629.5 3,375.9 3,185.3 2023-11-12
13 125 #7:121 288.48 2,620.5 3,375.3 3,182.9 2023-11-12
14 142 #7:128 288.83 2,665.7 3,374.0 3,189.1 2023-11-12
15 156 #5:60 288.66 2,634.3 3,387.4 3,183.9 2023-11-12
16 180 #7:141 289.12 2,651.6 3,382.7 3,187.5 2023-11-12
Why Cells Consistency is Important?

Cell consistency in a LiFePO4 (Lithium Iron Phosphate) battery, or indeed any type of battery, refers to the uniformity of the performance and characteristics of the individual cells within the battery.

When a battery is made up of multiple cells, it's important that each cell has the same capacity, internal resistance, self-discharge rate, and other performance characteristics. This is because the overall performance of the battery is only as good as its weakest cell. If one cell has a lower capacity or higher internal resistance, it can reduce the performance of the entire battery, and can even lead to premature failure of the battery.

In a series configuration, the same current flows through all cells. If one cell has a lower capacity, it will discharge faster than the others. Once this cell is fully discharged, the overall battery voltage will drop significantly, even though the other cells still have charge left. This can lead to underutilization of the overall battery capacity.

In a parallel configuration, all cells share the same voltage. If one cell has a higher self-discharge rate, it will drain the other cells to balance its voltage, leading to a faster overall discharge rate.

Moreover, inconsistencies between cells can lead to issues with balancing. Balancing is the process of ensuring all cells in a battery are at the same state of charge. This is typically done by either transferring charge from higher charged cells to lower charged ones (active balancing), or by dissipating excess charge in the higher charged cells (passive balancing). If the cells are inconsistent, it can make balancing more difficult and less effective.

Therefore, cell consistency is crucial for maximizing the performance, longevity, and safety of a battery. This is why Gobel Power puts a lot of effort into cell selection and sorting, to ensure that only cells with similar characteristics are used together in a battery.

Static parameters such as capacities, internal resistances, and voltage levels, though informative, may not provide a comprehensive picture of cell consistency in a LiFePO4 (Lithium Iron Phosphate) battery. A more practical and straightforward method to assess cell consistency involves monitoring the maximum charge voltage when a single cell reaches 3.65V. This is based on the understanding that if the cells exhibit good consistency, the voltage variation across them will be minimal, resulting in a higher overall maximum charge voltage. Therefore, observing the maximum charge voltage when one cell attains 3.65V can serve as a reliable indicator of the battery's cell consistency.

Home >>  Battery Pack Information Lookup