Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Anyone know how long a 85ah battery will charge from flat? Batter charger is a 6amp, AC 230-240v / 50Hz, 0.5A?

3 Answers

Relevance
  • 5 years ago

    Charging time will vary depending on variables

    associated with specifics of the battery being charged.

    That said, if, after 14 to 16 hours, the battery has not

    come up all the way, it may be bad or rapidly going bad.

  • lare
    Lv 7
    5 years ago

    if your battery charger delivers exactly 6 amps at all times (it doesn't) and the battery is 100% efficient charge cycle (it isn't) then 15 hours is the theoretical time to charge. since most inexpensive chargers taper the amp rate and batteries aren't all that efficient, it is more like 24 hours would be needed. the uncertainty in charging time is the reason you should use an automatic charger.

  • 5 years ago

    15 HOURS.

Still have questions? Get your answers by asking now.