I bought one of these about 3 years ago (under a different brand at the time) and have been very happy with it. I particularly like the fact that the display shows both the load current and the charging current in addition to the battery voltage. I was recently looking for a similar device with better features (more programming options) and couldn't find anything better and recently bought a second device for a different system. Cons: Not UL or ETL listed. There doesn't seem to be a way to set the charge voltage (although the maximum charge voltage is adjustable). Five stars because I couldn't find anything better in a similar configuration (30A, low cost).
70mai Jump Starter Max Midrive PS06 black
37 Review
Mroinge Automatic 6V/12V Trickle Charger For Vehicles, Motorcycles, Boats And More - Maintain Your Batteries With Ease!
29 Review
Keep Your Battery Fully Charged With A Smart 12V Charger/Maintainer Featuring Winter Mode
28 Review
Чехол совместимый с переносным автомобильным аккумуляторным стартером Halo Bolt 58830/44400/57720 МВт-ч. Подставка для питания Power Bank для станции питания Halo Power Station 100/для сетевого разъема. (Не подходит для модели Halo Bolt Air, только коробка)
24 Review