I have been using one of these https://www.amazon.com/ISDT-Touchscreen-Battery-Charger-Discharger/dp/B0823DGJXS/ref=sr_1_6?crid=2NDO69DDOIMMO&keywords=istd+lipo+charger&qid=1674858856&sprefix=Istd%2Caps%2C105&sr=8-6 . Run it off a power supply at home and a deep cycle battery at the pond the...