Opus BT-C100 reverse polarity protection

Hi!
I’d like to buy a Opus BT-C100(one slot) in order to charge and measure charge of my 21700 and 1.5v li-pol AA
I’ve already seen that people in the Internet wrote that that Opus doesn’t have a reverse polarity protection.

I cant believe that such devise doesn’t have so important protection.

Does Opus BT-C100 have a reverse polarity protection?

Its possible the new ones are updated, not sure.

Thanks, but I asked about the model with one slot — Opus BT-C100

Check this one:

https://sergei.nz/opus-bt-c100-reverse-polarity-protection/

Yes, I’d seen that article before.
Some time has gone since that post was made and I think there may be a new edition of the device.

A lack of RPP in the device is nonsense to me.

This device is obsolete and expencive. Just get some new one like LiitoKala Lii-PD2

The first that I need — is testing. I need to know how many mAh I can get from my batteries.
Does Lii-PD2 have a discharge mode?

OK then Lii-300 or 500

You could just go ahead & get the OPUS BT-C100 & be super careful so as to not make a mistake.

It is not that hard. :white_check_mark:

Are they not obsolete?

That’s not about me :slight_smile:

The best reverse polarity protection is being extra careful. The same way you don’t put your car in reverse while driving forward.

Yes. :white_check_mark::white_check_mark: