Tag: 26650

Flashlight comparison – Dimmable Triple XM-L2 vs USB rechargeable XPL HI (WHL #74)

China gadgets, finally :cool:

Both of these have been laying around for years now. Time for a review – we currently got a little bit of a snowy April, but mosquito season has already started and four of those bastards have made it inside my living room. No survivors :twisted: And of course, those flashlights can also be used for, you know, flashlight stuff. Finding things, not tripping over other things, sitting around with empty batteries and so on…

So, the contenders:

“Roxane X6 XPL HI 1850LM 650m Type-C Rechargeable LED Flashlight IPX7 Waterproof USB Charging 26650 Powerful Searchlight – Cool White”, bought from Banggood almost two years ago at 25,56€ including shipping. […]


O’CELL 26650 LiFePO4 8S 3.3Ah battery pack with BMS (WHL #28)

Same thing again – but different manufacturer. That’s what you get when you clean up your new lab… ;)

I know, might be boring to see another battery pack with almost identical specs (3.3Ah instead of 3.2Ah), but trust me, this is like night and day – or like quality China and Wan Hung Lo.

Of course these two batteries were purchased at the same time for the same thing, and they cost around the same as well. But (spoiler!): These two units work fine.

Top view:

Nice shrink wrap, proper label (shout out to O’CELL and their caring but not nagging sales people). […]


26650 LiFePO4 8S battery pack with BMS (WHL #27)

This weeks article is another by-product of the ADC testing (WHL #26) from last week. Could’ve packed in there, but I wanted to share some remarks on Chinese battery technology…

So first of all, this isn’t a piece of kit that I bought myself. After testing two 12V/2.2Ah lead batteries from work that were sitting unused on a shelf for five years, I needed another victim. Those quality Panasonic cells were flat as Kansas – the LC-R122R2PG datasheets recommends 8.6V cutoff voltage at 3C = 6.6A or 9.7V at 1C. Fully charged, they delivered 1C at 7V or 1.5C at 2.5V at full charge – slow 10.5V discharging to 0.1C cutoff and recharging didn’t help much. […]