Forum Discussion

Naio's avatar
Naio
Explorer II
May 12, 2018

Is a Johnson AGM starting battery fully charged at 12.68v???

Buying a new chassis battery, it took me forever to find somebody who actually had an AGM one in stock, as opposed to just claiming they did. Got it yesterday. Johnson Control, sold under the Dur...
MEXICOWANDERER's avatar
MEXICOWANDERER
Explorer
May 12, 2018
  • Unplug Meanwell
  • Disconnect Meanwell from battery
  • Plug Meanwell back in
  • Connect hand held meter to Meanwell
  • Tweak blue adjustment pot to 14.6 - 14.7 volts
  • Unplug Meanwell
  • Connect Meanwell to battery
  • Plug power cord back in
  • Now what do you have for an amperage reading
  • Charge with Meanwell until amperage reading drops to ONE-HALF amp or lower
  • Your AGM came to you after sitting on a shelf for eight months
  • It was nowhere near full
  • This is not good for the battery but it can be recovered OK
  • It must be charged with the Meanwell at this point, nothing else
  • You have the perfect machine to save the new battery
  • Please do it

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