Batteries & Chargers...?

Submitted: Sunday, Jan 23, 2005 at 01:34
ThreadID: 19689 Views:1692 Replies:2 FollowUps:0
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Over the past 18 months have constantly used 2 wet cell, 105a/h dc batteries aside to the main cranking battery on 75 L/cruiser. Running mainly Trailblazer, water pumps, lighting , elect. o/board and accessories. As 1 has died and the other on way out am contemplating changing to AGM or GEL as 2nd & 3rd battery.
Question is - Can I mix wet cell and sealled batteries and is the expense worthwhile/justified for being longer life as they claim? Also thinking of upgrading to a Xantrax 20A Three stage charger ($650) for the end set up, good idea?
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Reply By: Chaz - Sunday, Jan 23, 2005 at 06:30

Sunday, Jan 23, 2005 at 06:30
ozi explorer,

Yes, you can mix normal lead acid with sealed or gel led acid batteries. I've been doing it for years, but the only things to remember is that where your cranking battery will charge at 14.2 volts, the sealed one wants only 13.4 volts, so put a 10 amp diode in series with the charging wire to drop the voltage down, at least .7 of a volt. Also keep the sealed batteries inside the vehicle where it's cooler than under the bonnet.

Chaz
http://members.bettanet.net.au/~conody/index.htm
AnswerID: 94498

Reply By: TheUndertaker - Sunday, Jan 23, 2005 at 13:34

Sunday, Jan 23, 2005 at 13:34
Go the AGM ,will take and hold charge better and longer than gel, only real downside of the AGM is comparative weight, you will also save the cost of a 3stage charger as is not required for AGM.
AnswerID: 94534

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