These 14.8 volt 4 cell 2300mAh Lipoly pack are all hand assembled in house. We use only the best cells and materials in our Battery Packs. This 2300mAh 15C current rating makes these packs the ultimate Lipoly starter box pack on the market. We have added extra shrink wrap and a foam padding to help handle the abuse of start boxes. This battery starter box battery is 1/3 the weight of two 6 cell battery packs. Feature triple shrink wrap,14Ga wire and a balancing lead to keep the pack balanced.