The 11.1V 1300mAh 20/40C battery is ideal for use in mock AN/PEQ modules, with a Tamiya Small LiPo connector and measurements of 18x43x66mm. With a weight of 90g, these Lithium-Ion-Polymer packs offer improved performance compared to traditional Lithium-Ion packs, providing a higher capacity-to-size ratio and efficient electricity usage. Unlike other batteries, they do not have a memory effect, allowing for frequent charging without the need for full discharge. However, it is important to keep in mind not to discharge the pack below 3V per cell or overcharge it above 4.2V per cell. Additionally, LiPo packs have a low self-discharge rate of 3-5% per month when unused. It is crucial to properly maintain these packs by keeping an average charge of 70%, as failure to do so could result in permanent damage or even fire. With