Not worth the risk recycle them and let them go to a better placeMitch said:
I have been harvesting ceels for a powerwall project and recieved some knock off makita batteries which must be from Vanon. The cells are definately not Samsung.
On the cells it is clearly written (+vanon 18650LD15 20190716 3.6v) All these cells have had 100% failure and none have been able to be reused in my project nor would i use them if they were working as they are by the looks of things cheap import cells.
Generic said:As I open up more Vanon batteries, I'm convinced that several unrelated factories are producing "Vanon" batteries. There is absolutely no consistency to their packs. So besides laptop cells in a power tool pack, and the usual overstated capacity (1.5 Ah cells in a pack labeled 2.0Ah), I am now finding what appear to be genuine but dented/damaged/used Sanyo and Sony high drain cells in some of their Dyson V6 replacement batteries. Cuz honestly, who would fake a Sanyo LOL. But in all seriousness, I would avoid Vanon just for the fact that you have no idea what's going to be inside. And some of the BMS's I've been seeing don't even monitor each cell's voltage, yikes!
I have had very bad experience with Vanon. The worse one was I bought two batteries from them because they claim that I can return them if the batteries are not what they described. The batteries was claimed to be 2.5 Ah but the real tested capacity was a little over 1 Ah. When I requested to return them, they first ignored my requested. Then they said I need to return them to an address in Hong Kong to get refund. PayPal was not very helpful either. Eventually, I gave up. The cells inside are the same as what you shown. I think their actual capacity is 1.5 Ah. The tested capacity is even lower because the tool batteries usually only charge to 4.0 volts per cell, not 4.2 volts as the cell manufactures specified for test capacity.Hi All, probably a bit of a weird first post. Honestly the first time I've made a forum post anywhere in over a decade I reckon.
Anyway, I was drunk browsing ebay a couple weeks back and bought a few generic "Ryobi" 6Ah batteries off Ebay. I figured they were 30 odd bucks each, so why not right? Even if they're garbage, I'm not fussed, I can always just repack them with some decent cells and learn a new skill. Or use them as interesting paperweights. Or throw them at annoying coworkers. Whatever. So then once I sobered up, I figured I'd do some reading about what I'd just bought, and stumbled across this saga. I immediately realised I had to crack them open and have a look at what cells were in there. For science and stuff.
They turned up yesterday and this is what I found:
View attachment 23237View attachment 23238
The pack was taped into the case REAL good. I thought I was going to have to drill holes in the bottom of the case to push it through, but ended up getting them out less drastically with a bit of cursing and some leverage. Only pulled one out because effort, but I took the cap off the other two batteries and the cells were the same colour. Has anyone seen these Vanon branded cells before? I can't find any information on them via El Googs. The BMS looks pretty similar to the 4Ah unit that HBPowerwall reviewed on youtube a couple years back. They've definitely changed the layout slightly, but I'd bet the functionality hasn't changed.
I've done zero actual diagnostics on these yet. Just charged them up. All 3 assemblies accepted charge just fine. I'll check cell voltages from fully charged, then run them right down in the recipro or grinder then check cell voltages again. (if I can get probes onto each cell without pulling the pack out, because damn that was a pain) Be nice to know if anyone else has done the same exercise before with these cells though.
TLDR: Does anyone know anything about Vanon making their own cells/wrapping other brand cells?