Lithium 12 volt battery Is there a clear leader?
Stick the battery in
Connect the wires
And the battery has a management system built in
Is there a favorite?
Connect the wires
And the battery has a management system built in
Is there a favorite?
Forum Discussion
GordonThree wrote:
Cheap is build your own. It's rocket science, but only a little, I think you'd do a great job.
Hardest part is buying a bulk pallet of recycling batteries, disassembling the packs and weeding out the cells that are still healthy. Then you can combine them 3 or 4 in series, and as many in parallel rows as you desire. Cost goes up a little if you buy pre-screened cells, or way up if you buy new cells.
The maintenance circuits are pretty much standard equipment now from our friends on the other side of the Pacific. Charging is getting easier now, just supply constant voltage at 4.1 (or 4.2) Vpc and let 'r rip, the maintenance circuit will disconnect cells as they hit full.
If we're talking about Lifepo4 chemistry than 4.1 vpc will cook them or shorten their life. 3.65 vpc, jury still out if this will shorten life some even though most those drop in producers recommend charge 14.4-14.6v (3.6-3.65 vpc).
Mine which aren't drop in charge 3.55 vpc (14.2) max. Helps greatly to have a charging source that can be adjusted and not the on size fits all.GordonThree wrote:
Cheap is build your own. It's rocket science, but only a little, I think you'd do a great job.
This is true, but you have to know one very important thing. Use LiFePO4 cells and NOT LiCoO2 cells ! BIG DIFFERENCE !
LiCoO2 cells are what is commonly found in most electronics theses days. The standard size is 18650 (18mm x 65mm). Even LiPo batteries (flat, soft or hard side) use this chemistry. LiFePO4 cells are safer (they will not explode or burn if over charged or shorted) than LiCoO2.
The problem is finding a good BMS for LiFePO4 cells that can handle high current charging and discharging.- Lithium versus lead acid? Pros? Cons? Whys? Why nots?
https://www.youtube.com/watch?v=UfMROVzjVWU MDKMDK wrote:
Battle Born. 12V 100aH X 2.
Second !- "Lithium 12 volt battery Is there a clear leader?"
He's looking for a transparent battery in 12V lithium. MEXICOWANDERER wrote:
Huh?
AMAZON?MEAN WELL
RSP-500-5 AC/DC Power Supply Single-OUT 5V 90A 450W 13-Pin
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Price: $103.30 & FREE ShippingMEXICOWANDERER wrote:
Ahhhhh...
Ah cheap as in "Honey, forget Taco Bell's 99 cent special. Tonight we dine at Costco's food court".
I think you have a good grasp on CHEAP. :)- AMAZON?
MEAN WELL
RSP-500-5 AC/DC Power Supply Single-OUT 5V 90A 450W 13-Pin
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Price: $103.30 & FREE Shipping - Victron has drop in batteries, each one is computerized and controlled via cell phone or their proprietary system.
- There's a huge difference between being able to design the whole system around lithium ion and having a system you just want to drop in lithium batteries, which is I believe what Mex is asking about.
I imagine he has the smart to simply design a whole new setup around a tesla wall ;)
