Atlas lithium battery

Submitted: Sunday, Jul 18, 2021 at 18:34
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Looking at buying a Atlas 140ah lithium battery from Aussie Batteries n Solar to replace old AGM battery. It will be in rear of vehicle with 20a ctek dc charger mainly to run fridge.
Any feedback good or bad appreciated regarding reliability of these batteries
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Reply By: Peter T37 - Sunday, Jul 18, 2021 at 23:52

Sunday, Jul 18, 2021 at 23:52
I am under the impression your lithium battery will need the added expense of a new compatible charger so worth checking again. Your vehicle probably weighs close to 3 tonne in travel mode so the lighter battery does not make a great deal of difference in the bigger picture but sorry I dont have any feedback on the atlas battery
AnswerID: 637203

Reply By: Bob Y. - Qld - Monday, Jul 19, 2021 at 05:57

Monday, Jul 19, 2021 at 05:57
Read a critique on them recently that wasn't glowing.

They only have a max discharge current of 60A, most decent 100Ah lithiums seem to have at least 100A discharge current.


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Reply By: maurice b - Monday, Jul 19, 2021 at 10:41

Monday, Jul 19, 2021 at 10:41
I was actually looking at these the other day for a second vehicle. Bob Y is correct the 120 and 140 ah have a continues drain of 60 A and the 75ah model have 35A. To compare, my Itechworld 120ah X has a continues drain of 150A . These come up on sale regularly for $780 . For the cost ,reviews and warranty on the Atlas Lithiums i would buy as i just would use it to run a fridge . Rated Capacity 120.0 AH/12A (10hr,1.80V/cell,25°C)
Max. Discharge Current 60A (MAX Continuous) 90A (5 Seconds)
AnswerID: 637206

Reply By: Bazooka - Monday, Jul 19, 2021 at 14:27

Monday, Jul 19, 2021 at 14:27
Can't help re experience with the Atlas Dw but generally speaking, as BobY said, low max discharge amperage is SOME indicator of cell quality and/or BMS quality. According to Will Prowse who tests LFPs regularly (WP link) the BMS is often the reason LFP's fail or don't perform.

Warranty is only 1 yr + 4yrs pro-rata if that's of interest. Other sellers/"makers" may offer better although they typically don't provide details up front on their website - you have to specifically ask. Itechworld is an exception and says a full 3 year replacement warranty on some of theirs. All comes at a cost of course.

The specs are unfortunately not comprehensive on the Aussie Battery website. For example no low voltage cutoff data, no mention of active cell balancing (probably has it, but worth enquiring), and no mention of the cell quality or actual tested capacity (it's not rare for cheapies to test 10-15% below the advertised capacity). That shouldn't be a problem for the needs you mention.

All that said this may well be a decent battery. Others you could consider at roughly that price range are Solar King (get decent reviews) and maybe new kid on the block Duramax.
AnswerID: 637209

Reply By: Member - Bigfish - Wednesday, Jul 21, 2021 at 08:30

Wednesday, Jul 21, 2021 at 08:30
Wouldnt touch one. Max 50amp discharge is nowhere near normal lithium standard. Go Itech or Renogy.
AnswerID: 637237

Reply By: Batt's - Thursday, Jul 22, 2021 at 21:00

Thursday, Jul 22, 2021 at 21:00
Sorry don't know that brand but I've had a 170ah Renogy for a few months in the mid price rage area for lithiums with a good rep. I noticed on Aussies site they say can be charged with regular charger I personally would buy a lithium charger if your spending good money on a battery you want to get the best out of it.

I charge my 170ah lithium with a 20ah Powertech from road tech marine and have a permanent solar panel wired in as well. I also have another one charging my wife's 85ah agm they were only $219 each when I bought them.
AnswerID: 637272

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