Charger for 21700

Satan · 2018-07-01T09:02:33.000Z

You mean charge 21700 in Zanflare F1 flashlight ?

Lux-Perpetua · 2018-07-01T09:08:09.000Z

The C4-12 should be fine. MiBoxer claims their charger is suitable for the new cells. Costs would be around $ 30 - 40.

tatasal · 2018-07-01T09:13:44.000Z

Satan@103TFS:

You mean charge 21700 in Zanflare F1 flashlight ?

I think he means the Zanflare C4 charger perhaps…

Agro · 2018-07-01T09:14:38.000Z

tatasal:

Satan@103TFS:

You mean charge 21700 in Zanflare F1 flashlight ?

I think he means the Zanflare C4 charger perhaps…

Indeed. :person_facepalming:

Lux-Perpetua · 2018-07-01T09:22:25.000Z

I hardly managed to get those protected Acebeam 18650s into the C4. I never thought it would be possible to squeeze 21700 into it.

tatasal · 2018-07-01T09:31:52.000Z

The upcoming MiBoxer C8, an 8-bay version of the C4 series, is designed with the 21700 cell in mind.

Satan · 2018-07-01T09:33:03.000Z

8 slot seem to much for my need , Anyone try Lii-500 ?

Agro · 2018-07-01T09:33:11.000Z

FlashTom:

I hardly managed to get those protected Acebeam 18650s into the C4. I never thought it would be possible to squeeze 21700 into it.

Protected 18650 tend to be about as long as 21700.

RaVeN · 2018-07-01T10:16:17.000Z

The SkyRC MC3000 should fit 21700 right?

Zulumoose · 2018-07-01T10:20:34.000Z

As a last resort you could always use an 18650 charger with wires from each bay to a 21700 holder, should be easy to rig something up. The charger won’t know the difference.

vidramon · 2018-07-01T12:57:54.000Z

Satan@103TFS:

8 slot seem to much for my need , Anyone try Lii-500 ?

I can try tonight in Lii 500 and Zanflare C4 but I don’t know which brand do you have 21700 so maybe your will be a little longer or shorter… Don’t know how much it will helps to you…

Satan · 2018-07-01T13:43:33.000Z

Thanks vidramon the one I order was this https://www.aliexpress.com/item/-/32855373702.html?spm=a2g0s.13010208.99999999.344.292a3c004apcbz

maukka · 2018-07-01T14:29:01.000Z

FlashTom:

The C4-12 should be fine. MiBoxer claims their charger is suitable for the new cells. Costs would be around $ 30 - 40.

Unprotected 21700 is fine. Acebeam 5100 mAh doesn’t fit.

Same goes for the Lii-500 and Esyb E4.

RaVeN:

The SkyRC MC3000 should fit 21700 right?

Unprotected 21700 is fine. Protected button top Acebeam 5100mAh doesn’t really fit but still makes contact and is able to charge.

vidramon · 2018-07-01T15:03:15.000Z

Satan@103TFS:

Thanks vidramon the one I order was this Page Not Found - Aliexpress.com

I remember that I was charging my 21700 but not sure if I use lii 500 or F4. I will check and post back to you results and dimensions of the cell.

Satan · 2018-07-01T17:03:14.000Z

SkyRC MC3000 is too much cost for me , hope Lii-500 fit as maukka said my cell is unprotected

2_DOGS · 2018-07-01T18:01:03.000Z

My longer 26650 batteries measure 26700 and my Lii-500 has about 2 mm to spare so it should work OK.
21720 would be pretty tight.

HKJ · 2018-07-01T18:10:37.000Z

I would suggest starting your search here: Round cell charger index
Click twice on the battery length column.

vidramon · 2018-07-01T22:41:57.000Z

I test in couple of chargers, but 20700 battery, the length is the same so no problem in that way.

From left to right : Samsung 30Q, Protected Xtar 18650, Sanyo 20700.

Protected 18650 :

Sanyo 20700 :

Lii 100 - no fit
Lii 202 - will fit very very barely ( I do not recommend ! )
Lii PL4 - will fit without no problems
Lii 500 - will fit without no problems
Zanflare C4 - will fit without no problem ( less space stays than on Lii 500 and Lii PL4 )

I have more chargers but they are 500mA max and I don’t test in them since this is slow charge for this kind of cells.

Satan · 2018-07-02T03:43:44.000Z

Thanks HKJ vidramon that :+1:

Lightbringer · 2018-07-02T03:59:22.000Z

Just charge, or do all the analytical foo-fa?

For just charging, worse comes to worse, a Folomov A1. Magnetic snap-thingies that’ll charge one cell in a pinch, regardless of the length (within reason).

Otherwise, any charger that’ll hold a fat 26650, and fit a long protected panny-B (longest beasties I know of).