03
NO.
Items
-20°C
Testing method
Internal resistance
3
≤130mΩ
50% battery SOC state frequency of 1 KHZ ac
resistance tester.
Criterion
Discharge
Temperature
Characteristics
At 25±5°C discharge the battery with the current of
0.33C to the cut-off voltage. Store the battery at
various temperatures for 2h and discharge the
battery with 0.33C to the cut-off voltage.
0°C
25°C
55°C
≥70%
≥80%
≥100%
≥95%
Charge the battery to full capacity and store it for 28
days, and then discharge it with 0.33C to the cut-off
voltage.
Charge Retention
ability
Residual
capacity ≥80%
Discharge with the current of 0.33C until it can’t
discharge, and then rest it for 1h. Charge the battery
following CC (0.33C)/CV (14.6V) mode to full capacity,
and then rest it for 1h. Repeat above process until full
charged capacity is no more than 80% of normal
value. Accumulated times is defined as cycle life.
4
Cycle life (DOD%100)
≥2500 cycles
5
UE-24Li200
4. Product Performance
6
Recovery
capacity ≥90%
Rest for 1 hour after fully charged, then discharge with
0.33C current until the battery reaches the discharge
cutoff voltage. Repeat above process for three times,
if the discharge time is not less than 120 minutes, you
can stop and define the Discharging current*time
value (Ah) as battery capacity.
Rated Capacity
1
200Ah
Minimum Capacity
2
190Ah
5. Protective Circuit Specification
The batteries are supplied with a LiFePO4 Battery Management System (BMS) that can monitor and optimized
each single prismatic cell during charge & discharge, to protect the battery pack overcharge, over discharge,
short circuit. Overall, the BMS helps to ensure safe and accurate running.
Items
Over-charge protection for each cell
Specification
Content
3.80±0.03V
Over charge
Over-charge release for each cell
3.60±0.05V
Over-charge release method
Under the release voltage
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Sofia, Republic of Bulgary
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Fax. (+34) 917 750 542
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