24v lifepo4 battery charger recommendation

NVS

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Sep 14, 2021
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Victron is good but a little pricey. Look at these 2 maybe a little more bang for the buck.

 

chrisski

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Victron is good but a little pricey. Look at these 2 maybe a little more bang for the buck.

I own the Aims and bought off Will’s recommendation. I set it for a lower charge and float voltage by setting the switches to gel. I only charge with this, but do not float.

This is the best charger I’ve found that plugs into a 15 amp socket and charges at 37.5 amps DC at 24 volts, but I still have not found a charger that will charge and float at 27.6, my settings, that I’ll leave hooked up all the time.
 

chrisski

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the AIMS is not in stock through affiliated links . What about these ? Too crude ?
I don’t like the idea of clamp on cables for a 40 amp charger. Not sure they can easily be replaced for lugs. I’d also want to be sure the DC side is fused.

Could be the leads are easily removable and pic doesn’t show it well and could be fusing I’d internal.
 

squowse

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Jan 4, 2021
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I have two 24V 200Ah Lithium Batteries and I need a charger for them.

Is this a good charger? https://www.amazon.com/gp/product/B07TKN76V7

If not, why not and what else would you recommend?

Thank you so much!
A 30v switch mode power supply is cheap and does the job. Fine tune the voltage to 28v or whatever is desired. I found this one delivered 60% more power than specified unusually. Making the high current connections to the little terminals is the only awkward bit. Would be so much better with a couple of larger terminals.

 

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gonmag8

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Mar 23, 2022
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A 30v switch mode power supply is cheap and does the job. Fine tune the voltage to 28v or whatever is desired. I found this one delivered 60% more power than specified unusually. Making the high current connections to the little terminals is the only awkward bit. Would be so much better with a couple of larger terminals.

Will it not trip out for being at constant max current if charging a lifepo4 from low SOC?
 

BobCollins

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Jun 2, 2021
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Location
Silicon Valley
I own the Aims and bought off Will’s recommendation. I set it for a lower charge and float voltage by setting the switches to gel. I only charge with this, but do not float.

This is the best charger I’ve found that plugs into a 15 amp socket and charges at 37.5 amps DC at 24 volts, but I still have not found a charger that will charge and float at 27.6, my settings, that I’ll leave hooked up all the time.
I have been reading here about setting the AIMS charger to "gel" so as to get a lower float voltage. After using the charger, I find the fans are noisy enough that I suggest you turn the charger off between charges.
 

chrisski

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I have been reading here about setting the AIMS charger to "gel" so as to get a lower float voltage. After using the charger, I find the fans are noisy enough that I suggest you turn the charger off between charges.
I completely agree with turning the converter off between charges. My reason is the float voltage is higher than what I set my SCC to when charging With bulk/absorb.

For me, the converter rarely gets used. If I do use it, its only for topping the batteries on a cloudy day,

I agree with those looking for a quiet converter, this is not it. I have not found a good way to know how noisy a product is until I purchase one. I’ve heard of quiet fan mods on other equipment, but I’m not comfortable with voiding the warranty for that.
 

OzSolar

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Jan 5, 2021
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Southwest MO
A 30v switch mode power supply is cheap and does the job. Fine tune the voltage to 28v or whatever is desired. I found this one delivered 60% more power than specified unusually. Making the high current connections to the little terminals is the only awkward bit. Would be so much better with a couple of larger terminals.

Interesting product. I have a few applications for it so followed the link and didn't see any mention of the voltage being adjustable but I do see that it has a potentiometer. I assume that's how it's done?
 
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