In fact, only charging works. He writes that he can start, but actually he can't. Worse, the manual top-up randomly fails, you have to check it all day and reset it when it loses its sanity. Can't recommend this item, would rather buy something else.
Keep Your Battery Fully Charged With A Smart 12V Charger/Maintainer Featuring Winter Mode
28 Review
Efficient Charging With LST 7 Stages 5A Battery Charger - 3.3A 12V For Ultimate Performance
35 Review
Xiaomi 70mai Jump Starter Midrive PS01
120 Review
Mroinge Automatic 6V/12V Trickle Charger For Vehicles, Motorcycles, Boats And More - Maintain Your Batteries With Ease!
29 Review