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Post Info TOPIC: What size charger?
meetoo


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What size charger?
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Ok punters, what is the optimal size 240 volt multi stage charger to charge 240 amp of agl batteries? (2x120 amp, paralleled)

Cheers, John.



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dazz49


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25 amp

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Aus-Kiwi


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10 % charge

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Warren-Pat_01


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meetoo, batteries are best charged at the 10 hour rate so both Aus-Kiwi & dazz are right on the ball.

Have a read of this - www.energymatters.com.au/components/battery-voltage-discharge/ The only link that I had to EM was to buy a couple of portable panels from them a few years ago but I find their info very good. I have a copy of the voltages printed & in my van's hand book.

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Peter_n_Margaret


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Or larger..........

Cheers,
Peter

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OKA196, 4x4 'C' Class, DIY, self contained motorhome. 960W of solar, 400Ah of AGMs, 310L water, 280L fuel. https://www.oka4wd.com/forum/members-vehicles-public/569-oka196-xt-motorhome
 

 
swamp


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HI
The charge rate is typically higher for AGM compared to wet flooded batteries
Typical
AGM charge rate
wet batt = slow 10% upto 20% of AH
AGM batt = slow 15% upto 25% of AH

[technically agm rates are only limited by there temperature]

Batteries can have specific conditions for charge so its always recommended to follow the guidelines by the maker.

In reality 2x 120ah are charged by 240v 25amp or a 40amp charger . If u bush camp alot your generator needs to run the charger .

Going below 25amps will extend the run time on generator potentially to eg 8hrs +


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meetoo


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Thanks all. Great to see a close agreeance between replies. Makes it easier to choose one. Looks like it is a choice between 25 amp and 25 amp. Hmm, I think I'll choose 25 amp.

Cheers, John.



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