Author Topic: lithium battery charging with battery tender  (Read 541 times)

Offline Moosehaed

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lithium battery charging with battery tender
« on: Feb 11, 2019, 10:09 AM »
I have a battery tender plus and I was wondering If it would charge 10amp lithium batteries?

I tried to contact Battery Tender but they have not returned my emails.

Offline DR.SPECKLER

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Re: lithium battery charging with battery tender
« Reply #1 on: Feb 11, 2019, 10:39 AM »
Can be used in a pinch.might not charge to full capacity but when i did it for a test on my first dakota lithium it charged to 13.8.the dakota lithium charger also charged it to 13.8.my charger was a battery tender jr.

Offline JohnJ1981

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Re: lithium battery charging with battery tender
« Reply #2 on: Feb 11, 2019, 12:15 PM »
As long as the charger has a battery management system or some type of over voltage/charge protection circuit  you should be fine. Otherwise you can start fires or possibly grenade your lithium battery with out a BMS circuit. Might void your warranty on the battery as well not charging it with the appropriate charger.
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Offline alaska mike

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Re: lithium battery charging with battery tender
« Reply #3 on: Feb 11, 2019, 01:27 PM »
I think battery tender has a charging unit made for lithium batteries.
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Offline 3300

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Re: lithium battery charging with battery tender
« Reply #4 on: Feb 11, 2019, 02:03 PM »
looks like your charger is only 1.2amp. while the eo chargers are 3.3 amps. yours is missing 2 amps. i would use the right charger for it. the onboard bms should be made for the higher amp charger. on the other side, it might take a full charge and just take longer to get it there.

1.2amp
https://www.amazon.com/Battery-Tender-021-0128-Maintain-Damaging/dp/B00068XCQU

3.3amp
https://energizedoutdoors.com/collections/lifepo4-battery/products/lifepo4-battery-3-3a-charger-with-fan

Offline Moosehaed

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Re: lithium battery charging with battery tender
« Reply #6 on: Feb 11, 2019, 06:27 PM »
It's a 3 amp charger. Just want to figure out if I need to buy a new charger if I get a lithium.

looks like your charger is only 1.2amp. while the eo chargers are 3.3 amps. yours is missing 2 amps. i would use the right charger for it. the onboard bms should be made for the higher amp charger. on the other side, it might take a full charge and just take longer to get it there.


1.2amp
https://www.amazon.com/Battery-Tender-021-0128-Maintain-Damaging/dp/B00068XCQU

3.3amp
https://energizedoutdoors.com/collections/lifepo4-battery/products/lifepo4-battery-3-3a-charger-with-fan


Offline John2448

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Re: lithium battery charging with battery tender
« Reply #7 on: Feb 12, 2019, 08:02 AM »
I just purchased a Dakota also and I didn't notice you needed to charge with a lithium charger. I have the small battery tender Jr that I been using for my other batteries but it doesn't have the option for lithium. So I think I am going to get what FlamDragger said. Actually have it in my Amazon cart before I seen this post

Offline uncleshorty

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Re: lithium battery charging with battery tender
« Reply #8 on: Feb 13, 2019, 09:46 AM »
The amperage of the charger only determines how fast a battery can be charged.  The nominal terminal voltage of the battery determines the correct charger.
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Offline jwetovick

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Re: lithium battery charging with battery tender
« Reply #9 on: Feb 14, 2019, 08:56 AM »
The amperage of the charger only determines how fast a battery can be charged.  The nominal terminal voltage of the battery determines the correct charger.
I'd like to hear some more feedback from those that mention a lithium needs some higher amp to charge completely etc. I was under the same assumption as stated here by shorty. however, i did buy the charger that comes with the EO but have a few battery tender jr layin around.

Offline Kevin23

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Re: lithium battery charging with battery tender
« Reply #10 on: Feb 14, 2019, 11:34 AM »
The lithiums do not need more amps... although they can take it and not be damaged, unlike a SLA. So you usually see lithium chargers with more amps because, well why not?

The battery tender jr will charge a lithium battery no problem, just only to about 98-99% charge. I'd still suggest getting the charger made for the battery, unless the battery mfg says any SLA charger will work. The first thing they will ask if you have a battery issue is what charger are you using.

I'm not sure on the big battery tender, don't have one.

 



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