3.7V Lithium Polymer Batteries — 5,000mAh and Above

A LiPo model number normally encodes the nominal cell dimensions. For example, 603040 typically refers to a cell around 6.0 mm thick, 30 mm wide and 40 mm long. This is a common naming convention rather than a formal engineering standard, so the exact dimension order, rounding and tolerances should always be confirmed against the controlled specification from the manufacturer before design-in.

Start from the maximum battery space available inside your device — thickness × width × length. Use that envelope to shortlist the models that physically fit, then compare capacity, continuous and peak working current, and the finished configuration such as wires, connector and protection to select the best match.

Nominal cell dimensions describe the bare pouch cell itself. The finished battery is usually larger, because it may require additional space for the PCM board, wire exit, connector, insulation and normal assembly tolerances. Design around the finished dimensions, not only the bare cell.

Yes, it can, depending on the PCM design and its installation position. There is no fixed number of millimetres added, so the finished dimensions must be confirmed for your exact production configuration.

Capacity is constrained by the available cell volume — thickness, width and length — together with the cell design. For a fixed footprint, different thickness options may provide different capacities, so compare the thickness and capacity trade-offs within the space you have.

You can provide your maximum battery space, working voltage, target runtime or capacity, continuous and peak working current, preferred connector and quantity, and THOR can review suitable standard or custom options for your device. Get a Battery Solution →