The Predator 228, designed by Sinuous Designs in the USA, is powered by dual replaceable 18650 cells whose max output reaches 228W/50A. The application of plated USB ports contact makes it possible to quick charge at 2amps. The separate battery power can be detected accurately through the upgradable firmware.
Moreover, with the help of an RC (reverse charging) adapter, the Predator 228 can serve as a power bank to charge other electronic devices. (sold seperately)
Need batteries to power your new bit of kit? you can find Samsung 25r 18650 batteries here, or LG HG2 18650 batteries here.
LG HG2 3000mAh 20A battery
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Samsung INR 18650 25R High Drain Lithium Ion Battery