Renogy 170Ah Lithium Dead – Warranty Won’t Proceed Without Invoice (Converter Gone) – Anyone Been Through This?

[manicism]

Hi all,

Looking for some real-world experience before I decide how far to push this.

I’ve got a Renogy 170Ah LiFePO₄ (RNG-BATT-LFP-12-170) in my T6.
Van converter who supplied it has disappeared, so I don’t have the purchase invoice — only the battery itself and serial number.

Serial: 22RBL1006xxxxxx (so looks like a 2022 manufacture build)

⸻

Fault

Battery appears to have failed internally rather than install related.

Bench test results:
• Charged via Renogy 20A mains lithium charger to 14.28V
• Measured directly at battery terminals
• No load connected
• Voltage drops to 0V within about 40 minutes.
• No low-voltage cutoff behaviour
• My second identical battery works perfectly when isolated in same setup

So looks very much like BMS collapse.

⸻

The issue

Renogy won’t even assess it because I don’t have an invoice, despite the serial clearly dating it within warranty and the supplier no longer existing.

I’m not trying to blag a free battery — just want it tested properly.

⸻

Question

Has anyone here actually managed a Renogy warranty without proof of purchase?

Or did you have to go via distributor / consumer rights route?

Interested to hear what worked before I go down the wrong rabbit hole.

Cheers

 

[Dellmassive]

I've had good dealings with renogy, and kit replaced.

But always with a purchase receipt.

Will they not accept your conversion receipts, when you had the kit fitted?

I suppose they want the original purchase r to come the warranty claim?

 

[Dellmassive]

Sell it for spare and repair, and by a replacement direct from renogy.

Or buy a Roamer that now comes with a 12yr warranty.

With a Forum discount.

Roamer - Premium LiFePO4 Lithium Leisure Batteries Campervans & Boats

"Roamer SMART4, XTREME & HOME: 12V-48V LiFePO4 leisure batteries for campervans, motorhomes & boats. 100Ah-460Ah, Bluetooth BMS, 10-year warranty."

roamer.com

.

 

[manicism]

I've had good dealings with renogy, and kit replaced.

But always with a purchase receipt.

Will they not accept your conversion receipts, when you had the kit fitted?

I suppose they want the original purchase r to come the warranty claim?

Yes I have had good experiences in the past with items I have bought from them, think there system relies on their ticket management system that has all details of purchases linked to you and makes the process smooth.

I am hopeful that it is just a bit of “computer says no” that is happening and am politely pushing back on their rejection without invoice.

Just frustrating.

 

[manicism]

Sell it for spare and repair, and by a replacement direct from renogy.

Or buy a Roamer that now comes with a 12yr warranty.

With a Forum discount.

Roamer - Premium LiFePO4 Lithium Leisure Batteries Campervans & Boats

"Roamer SMART4, XTREME & HOME: 12V-48V LiFePO4 leisure batteries for campervans, motorhomes & boats. 100Ah-460Ah, Bluetooth BMS, 10-year warranty."

roamer.com

.

Yeah I’m also starting to look at alternatives in case I have to go down that route, but physical size is the main problem.





The battery lives at the rear of the van in a cupboard just before the wheel arch, so footprint is pretty restricted — not much (any) room to go longer or wider.