Cycle Life
The 18650 Li-ion Battery range is published at around 500 cycles.

18650 lithium battery 18Ah 3.7V with PCB and connector, protected against over-charge, over-discharge, over-current and short circuit. Charge and discharge current and dimensions are customised to the device.
Category: 18650 Li-ion Battery
Size: 22*75*131mm. Model: ICR18650 1S7P.
The 18650 Li-ion Battery range is published at around 500 cycles.
Nominal voltage 3.7V, typical capacity 18.2Ah. The complete parameter table is published below, not summarised.
Supplied with a protection circuit against over-charge, over-discharge, over-current and short circuit.
Operating temperature is published per state. Charge: 0~45℃; Discharge: -20~60℃.
Capacity, arrangement, case, terminal, cable, connector and custom logo are all specified by the customer. Dimensions are made according to the device's request.
Used across power tool and garden tool brands, e-bike and light electric vehicle builders.
| Item | Rating | Note |
|---|---|---|
| 1.1 Capacity | Typical: 18.2Ah | Discharge: 0.2CmA |
| Min.: 18Ah | ||
| 1.2 Nominal Voltage | Average 3.7V | |
| 1.3 Discharge Cut-off Voltage | 3.0V | |
| 1.4 Charge Current | 3600mA | Standard Charge |
| 1.5 Charge Voltage | 4.2V | |
| 1.6 Charge Time | Approx 6h | Charge: 0.2CmA |
| 1.7 Max. Charge Current | 1C | |
| 1.8 Max. discharge current | 1C | |
| 1.9 Weight | Approx 350g | |
| 1.10 Operating Temperature | Charge: 0~45℃ | |
| Discharge: -20~60℃ | ||
| 1.11 Storage Temperature | <1 month: -10~45℃ | Recommended storage temperature: 20℃, at the shipment state |
| <3 month: -10~35℃ |
Data sheet published by Sunder Battery for this model.
Sunder is an OEM and ODM manufacturer. The list below is what is decided by the customer rather than by us.
Charge at 0.2C constant current to 4.2V, then hold that voltage until the current tails off.
Stop at the published cut-off voltage. Repeated deep discharge is what shortens a lithium ion pack fastest.
Charge between 0℃ and 45℃. Heat, not cycles, ends most tool packs.
Store around 20℃ in the shipment state rather than fully charged or flat.
Nominal voltage 3.7V and typical capacity 18.2Ah. The full parameter table is published on this page.
The 18650 Li-ion Battery range is published at around 500 cycles.
4.2V, charged constant current then constant voltage. The normal charge current is 0.2C to 0.5C and the maximum is 1C.
Approximately 350g. The dimension and weight for every model in the range are in the model list on this page.
Yes. The charge and discharge current can be customised and the dimension is made according to the device's request. Custom logo is available.
After price confirmation, you can request our battery samples to test.
Tell us the quantity, the delivery date you are working to and any change you need to the standard build.