should I buy a hobby charger?

No I don’t have 4.35 cells but 4.30 icr 28 samsung sdi cells.

About the scroll wheel, yes it’s a high quality encoder.
Everything about the build is solid quality, even the IPS is quite nice and all functions are color coded, as well as charge complete screen.
All luxuries but nice to use.

you can still charge them to 4,2v it will not cause any harm to them, actually it would be even better as far as lifespan, but you will lose about 100-200mah in capacity by not charging them to 100%

I use a Imax B6 for most of my charging needs with a 14X parallel cell holder with built in volt meter for quick voltage testing of cells, just toss it in for a second to get a reading.

It works great and I could not be happier. I do have a cheap nitecore single cell charger for times when I just have a single cell to charge (rare).

I went from B6 to SC-608 and no way would I buy the B6 over the SC. The rotary encoder is easy and feels decent quality.

It is also almost 3X the price :wink:

You can’t beat the bang for the buck on the Imax B6. Flash new firmware to it and it is a very nice unit indeed for $15.

I use an EZ peak 6 amp traxxas charger, although soon I will probably upgrade to a hitec or graupner or something similar.
The graupner is a bit expensive, about $400.

That is a very fair point, although does that 1/3rd of the price B6 come from a reputable place as a genuine version?

It is technically a clone but now days I think all B6 are “genuine” since while mine didn’t have any stickers to say it was genuine when I opened it up to flash the firmware it has the genuine hardward layout and needed the genuine firmware flashed for it to work.

In other words “clone” doesn’t really matter, they all work the same. Plus since it is off ebay you know you are 100% protected should there be a problem in the first 3 months.

I have a feeling they are all made on the same assembly line now days in massive bulk and some just get a sticker and some don’t. With the custom firmware mine is very accurate and works as good as I could ask for the price.

The stock firmware sucks because you can’t calibrate it, which I am guessing is on purpose with the clones. The genuine versions seem to have a better factory calibration, I would guess that the “genuine” models get a calibration step before leaving the factory and the clones do not.

If you add in a laptop power brick to both it’s only twice as much.

For an extra $20 you get perfect out of the box performance without needing any calibration or firmware. It also has 3 times the output power and is much nicer in general.

Power brick = $1 at thrift store

I guess you are right.
But since the OP mentions large lead acid batteries and parallel charging 6 cells at 1A each the ISDT may save a lot of time.

Plus it is much cooler.

I have a B6 Mini and the SC608. I like them both, but the SC608 is very nice design I just have not used it enough to give a strong recommendation on it yet. I like it enough that I’m buying their new model the Q6 Plus. If I was buying today, I’d wait until you can get a Q6 Plus and start with that, learn something about it and then you can make your own informed choice on your second charger if you need one.

As hobby chargers those 15-40$ ones are good for common RC battery packs, small solar batteries, modded power tool packs or selfbuild e-bike battery

For analysing cylindrical cells there are good 2 and 4 slot chargers, using a RC charger is a lot more time consuming
To fast charge 18650 or 26650 there are some 2A chargers, I would not use a hobby charger

But if you want to get a good calibration or a high power discharge to refresh big lead batteries there are other professional chargers

Wouldn’t hurt them to charge to 4.35 either. Maybe lose a few life cycles out of 400, but whatever

I think for now i’ll keep using my friends charger for the lead acid batterie, as I only need it once a year. If i can find an all in 1 solution great but I don’t think that will be possible.
I read the whole tread about isdt 608 and I might go for it (already asked for a code maybe I should ask one for the 620 also). Only thing bout 608is that it cant read Ri of single cells just from packs. Am i correct?

Sorry i don t reply to everyone but i m on a phone and it s a pita. But i do apriciate the replies

I’m not on the latest firmware but yes seems like you must use the balance tab to get IR estimates.

What is a good charger or other device to test LiIon cells for capacity, internal resistance, and max current under load?

You test the resistance with a multimeter, and the capacity with a hobby charger that has a discharge function which almost every good one does.
There is no max current under load, unless it’s protected. This is why they sometimes explode.