# Charging individual batteries

**URL:** https://community.electricforum.com/t/charging-individual-batteries/6175
**Category:** GEM Forum
**Created:** [July 2, 2016, 3:45pm UTC](https://community.electricforum.com/t/charging-individual-batteries/6175 "2016-07-02T15:45:56Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![GemitMB](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/gemitmb/32/564_2.png) [@GemitMB](https://community.electricforum.com/u/GemitMB)
#### Post date: [July 2, 2016, 3:45pm UTC](https://community.electricforum.com/t/charging-individual-batteries/6175/1 "2016-07-02T15:45:56Z")

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how do I go about charging each of my batteries individually to ensure they are all 100%?

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### Author: ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)
#### Post date: [July 2, 2016, 4:00pm UTC](https://community.electricforum.com/t/charging-individual-batteries/6175/2 "2016-07-02T16:00:10Z")

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Use a 12 volt automotive charger.

However you can use a volt meter 4 hours after charger has shut off to check voltage.

Better yet is to check specific gravity with a $7 hydrometer.

Note: if all your batteries are low (under 1250sp grv) after charging with the on board unit, suspect your charger is set for Gel batteries. This will doom your 5 year batteries to 3 or less years life as well as limiting range…

Delta Q charger

#14 is Gel

# 13 is flooded

Rodney

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<div class="post-metadata">

### Author: ![GemitMB](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/gemitmb/32/564_2.png) [@GemitMB](https://community.electricforum.com/u/GemitMB)
#### Post date: [July 4, 2016, 7:31am UTC](https://community.electricforum.com/t/charging-individual-batteries/6175/3 "2016-07-04T07:31:30Z")

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[quote=OLD HOUSEBOATER;31538]Use a 12 volt automotive charger.

However you can use a volt meter 4 hours after charger has shut off to check voltage.

Better yet is to check specific gravity with a $7 hydrometer.

Note: if all your batteries are low (under 1250sp grv) after charging with the on board unit, suspect your charger is set for Gel batteries. This will doom your 5 year batteries to 3 or less years life as well as limiting range…

Delta Q charger

#14 is Gel

# 13 is flooded

Rodney[/quote]

Thanks for the reply! I’ll run through these suggestions. Thanks!