Polymer Li-Ion Battery 3.7V 1000mAh 603040, 2-Wire
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Prices updated: 13 Oct 2026
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About this product
Single-cell polymer lithium-ion battery rated at 3.7 V and 1000 mAh in a flat 40 x 30 x 6 mm pouch with a 2-wire lead. It provides longer runtime for portable gadgets, handheld devices and DIY projects with a larger footprint. Use it with a protection and charging circuit made for single-cell lithium cells.
Specifications
- Nominal voltage
- 3.7 V
- Capacity
- 1000 mAh
- Dimensions
- 40 x 30 x 6 mm
- Chemistry
- Polymer Li-ion
- Leads
- 2-wire
Frequently asked questions
Can I use this 1000mAh cell in place of a smaller 3.7 V battery?
Only if the physical size fits your enclosure and the device's charging circuit supports this capacity. A higher capacity usually means longer runtime, but the charger and protection board must still match a single 3.7 V lithium cell.
How should I charge it safely?
Use a single-cell Li-ion or LiPo charger that stops at 4.2 V and includes protection. Charge current should follow the charger's specification for this cell size rather than being set arbitrarily high.
