Renogy Pro 12V 100Ah Lifepo4 Battery Teardown
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- Опубліковано 25 сер 2024
- This is testing and teardown of a replacement Renogy PRO battery following the failure of the 1st battery after capacity testing. Renogy kindly replaced the battery and are actively doing their own testing. The issue stems from the battery hitting low voltage disconnect, then refusing to charge. Again, renogy are aware and doing their own tests to try and replicate my findings.
The original Battery testing can be watched here • Renogy Smart Lithium P... with follow up video here • I Killed My Brand New ...
DCHOUSE Lifepo4 Battery Links -
These batteries are available via Amazon amzn.to/4eoGB6h and eBay - ebay.us/cBWn3I
They also have a 12V 200Ah version on eBay - ebay.us/x0xoH6 and a 24V 100Ah ebay.us/4P4QmB (clicking these links will take you to eBay)
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Love uour little series on these renogy batteries. I just ordered one...based on your reviews i think it will serve me just fine. Looking forward to seeing more from your channel
Appreciate you taking time to watch and comment, thank you and I'm confident the battery will deliver, keep us updated if you do encounter any issues. 🍻
I hope Renogy gives you feedback ones they’ve worked it out. It really isn’t good enough for the BMS not recovering from a cut off. It means one mistake leaving something drawing and the battery is dead.
They actually blamed the fact I only discharged at 20 amps 😆
@@DCGUY that’s not a good answer. I’ve seen plenty of Lithium batteries discharged to cut-off and they start right up once you apply a suitable charging voltage. It sounds like a fault with BMS and its protocols for reconnecting the battery.
@peterj5751 Yes, the BMS definitely lets the battery down.
Maybe a secondary bms and shunt/monitor be a good back up and give some piece of mind?
On the battery that refuses to kick in, I would be tempted to leave it near a dry heat source for a few hours. I live in a camper and had a house battery, that I thought had died, which is intentionally based near a diesel heater (not the outlet, toasty but plenty of ambient) to stop them freezing. Sure enough, after the one time a 'non-charger' surfaced the next time I used my heater some months later it kicked in. That was 18 months ago.
Wow, thanks for the info.
It seems like this particular BMS is allowing too much discharge, then you have to wait for the cells to recover. The hysteresis gap seems too much. Some BMS have a 'pre' charge stage/state when the cells are severely under-volt if left to go completely flat or, e.g. the lipo powered device is left unused for an extended period, can take a long while to bring them back to a 'chargeable voltage'. Just my tuppence.
Thank you for taking time to watch and comment. Valid point. Cheers 🍻
no need to have to wait for the battery to "recover" after a complete discharge. When the battery is fully depleted it only means no discharging can happen until the battery is charged up a little. The battery can always be charged at any time and there is no waiting time.
got the 200 for my boat.
Did the first one recover as well or just this one
Only this one recovered. The other is still not taking charge and is going back to renogy.