[Convenient Portability]:100% new design, Size: 8.7*4.5*4.6 inch. Reduce 30% in volume compared with similar products in the market, easy to carry outdoors. [Creative Design]: Heat emission holes added to help battery cool down. M5 terminal and DC 5.5*2.5mm can charge and discharge at the same time. [Wide Application]: Suitable for various outdoor applications: fishfinder, trolling motor, camping, RV, boat, marine. [Comprehensive Protection]: Built-in BMS protects the battery from overcharge, deep discharge, overload, overheat, short circuit and keeps battery cell balance.