Author Topic: RRSkit di2 adapter charger kills battery?  (Read 845 times)

kbernstein

RRSkit di2 adapter charger kills battery?
« on: August 25, 2026, 05:53:58 AM »
I picked up one of those usb c di2 charger adapters from RRSKIT, battery was at 40% something. After leaving it 30 minutes to charge on a known good USB A to C cable, the etube app asks if i want to connect to previously connected unit, and shows "there is no battery, or the battery does not have a sufficient charge. use a battery with sufficient charge, or charge and then reconnect the battery". RD button doesnt activate the LED at all

Any idea??

kbernstein

Re: RRSkit di2 adapter charger kills battery?
« Reply #1 on: August 27, 2026, 10:30:27 AM »
Solved. Apparently using a good usb cable is a bad thing. Do not use a high performing cable because that triggers the BMS to shut down the battery. Using a low voltage cable worked perfectly fine. My apologies to rrskit for the many millions in damages my skepticism caused

Dan S.

Re: RRSkit di2 adapter charger kills battery?
« Reply #2 on: August 28, 2026, 02:33:13 AM »
Solved. Apparently using a good usb cable is a bad thing. Do not use a high performing cable because that triggers the BMS to shut down the battery. Using a low voltage cable worked perfectly fine. My apologies to rrskit for the many millions in damages my skepticism caused

I always use shitty USB-C cables that come with many of the shit I’ve ordered from Aliexpress, so I guess I am safe haha.

FrostedDyslexia

Re: RRSkit di2 adapter charger kills battery?
« Reply #3 on: August 31, 2026, 09:13:39 AM »
wait, what? What even qualifies as a 'bad' cable lol

I just ordered one of these adapters together with the button thingy

Aren't they all 5V unless it's power delivery? I guess an old USB2.0 extension cord would limit it to 0.8-1 amps..?

ZacItaly15

Re: RRSkit di2 adapter charger kills battery?
« Reply #4 on: Today at 04:26:33 AM »
the diameter of the cable gives you the difference between good and bad cable

I always use "bad " cable for small applications

Serge_K

Re: RRSkit di2 adapter charger kills battery?
« Reply #5 on: Today at 05:01:07 AM »
wait, what? What even qualifies as a 'bad' cable lol

I just ordered one of these adapters together with the button thingy

Aren't they all 5V unless it's power delivery? I guess an old USB2.0 extension cord would limit it to 0.8-1 amps..?

USB-C is a mess. The EU forced a standard, which was a great idea. But different devices use different things, and it gets extremely confusing. There's wattage / voltage questions, and then there's also data/no data, and how both sides of the cable communicate.
I think the result is that we now have 1 port for everything, but we still all need lots of different cables and chargers... I also have battery packs that stopped working with newer phones, because the chip on the phone stopped recognizing "dumb" power, even if it's powerful enough.
The whole thing is a confusing mess.