21700 batteries that fit Convoy S21A flashlight

d_t_a · 2019-06-18T05:59:27.000Z

passive101:

Protected 21700s are not the same size?

I have protected 18650s that for my 18650 flashlights. They looked about the same size as my friend’s unprotected 18650s for his vape.

Protected 18650s and unprotected 18650s may have a difference of 3-4mm in length.

Protected 21700 and unprotected 21700 may have a difference of 5mm in length.

Most flashlights that accept 18650 will accept both protected and unprotected 18650s, but not all (eg. Emisar D4, Astrolux S42, etc. do NOT fit protected 18650s).

Protected 21700 are still very rare, I doubt flashlights that are not designed with those in mind will fit them, because the springs have to accommodate 5mm length (there will be a lot of current drop, for flashlights that use high-drain cells, having the extra length will mean a big current drop due to the size, as per my understanding)

justanotherguy · 2019-06-18T14:52:03.000Z

I’m waiting for a different LED on the S21A

justanotherguy · 2019-06-28T22:35:30.000Z

is there a 5000k 217000 convoy S21a yet?

California_Prepper · 2019-07-09T02:37:22.000Z

What would be the best 21700 for the Convoy m21a? Much appreciated.

California_Prepper · 2019-07-09T02:39:58.000Z

What would be the best 21700 for the Convoy m21a? Much appreciated.

BlueSwordM · 2019-07-09T03:53:59.000Z

The Samsung 50E:

Liion Wholesale Batteries

Search Results

California_Prepper · 2019-07-09T04:09:05.000Z

BlueSwordM:

The Samsung 50E:
Search Results – Liion Wholesale Batteries

Thank you for the info and including the link. What makes this one the best?

BlueSwordM · 2019-07-09T04:10:18.000Z

Since the M21A/S21A will only draw 5-6A at max, you only need a cell that has 10A continuous current capability.

Hence, why I recommended the 50E, since it is a 10A continuous 21700.

California_Prepper · 2019-07-09T04:14:49.000Z

Ordering now. Thank you!

amishbill · 2019-08-09T14:48:47.000Z

Well Crap.

This explains why I can’t get my Sofirn labeled (Protected, I think) 21700 into the s21a that just arrived. :-/

e1000 · 2019-08-09T16:08:36.000Z

Molicel P42A fits

abgx1 · 2019-09-05T14:22:38.000Z

some tip where to buy 21700 battery to s21a with shipping to central EU? (slovakia)

there are so many fakes on aliexpress, and in local store they cost like 15-20€ for samsung 50e

spaghettikku · 2019-09-06T09:27:58.000Z

It not fit to s21a

abgx1 · 2019-09-08T19:34:00.000Z

I bought LG m50t, we will see

d_t_a · 2019-09-10T04:38:08.000Z

Genuine Samsung 30T/40T/48G/50E and LG M50 fits the Convoy S21A.

iJoy 3750mAh 21700, Sofirn 4000mAh 21700 and Liitokala Lii-40A 4000mAh 21700 battery diameter is slightly too big and won’t fit the S21A battery tube.

I’ve read that some people have some luck inserting the Lii-40A 21700 from the head end (instead of tailcap end) of the 21A battery tube though.

Wildcat · 2019-10-02T05:27:31.000Z

New Liitokala Lii-50E 5000mAh have 21.3mm diameter and fit perfectly into Convoy S21A.

The_Fat_Controller · 2019-10-02T10:45:22.000Z

Does anyone know the reason 18650/21700 was chosen over 26650 for the L21A ?? looking at the range of good capacity 26650 cells available i would of thought that was a better option?

Does the L21A have a different reflector than the L2? thinking i should just buy the XHP35 Hi emitter, driver and an L2 host and save a lot of aggro trying to get 21700’s ?

Yokiamy · 2019-10-02T11:15:00.000Z

The_Fat_Controller:

Does anyone know the reason 18650/21700 was chosen over 26650 for the L21A ?? looking at the range of good capacity 26650 cells available i would of thought that was a better option?

Does the L21A have a different reflector than the L2? thinking i should just buy the XHP35 Hi emitter, driver and an L2 host and save a lot of aggro trying to get 21700’s ?

The L21A is just an L2 with a 21700 size battery tube, so the head is the same, but with different threads on the tube side.

However, the XHP35 driver is single cell only, so don’t use the extra tube for 2 cells. So only use 1 cell.

The_Fat_Controller · 2019-10-02T11:30:09.000Z

Yokiamy:

The_Fat_Controller:

Does anyone know the reason 18650/21700 was chosen over 26650 for the L21A ?? looking at the range of good capacity 26650 cells available i would of thought that was a better option?

Does the L21A have a different reflector than the L2? thinking i should just buy the XHP35 Hi emitter, driver and an L2 host and save a lot of aggro trying to get 21700’s ?

The L21A is just an L2 with a 21700 size battery tube, so the head is the same, but with different threads on the tube side.

However, the XHP35 driver is single cell only, so don’t use the extra tube for 2 cells. So only use 1 cell.

Yes 1 cell only (should of mentioned that) I have been searching for a 2s 2.3amp boost driver but as yet not found anything sadly… Trouble is being in the UK 21700 is hard to come by and id need a different charger as well , think il go with the L2 that way at least if i ever find a suitable 2s driver i can add a second battery

Im guessing there is no 6v XHP35 hi emitter available?

Yokiamy · 2019-10-02T11:47:54.000Z

Something like THIS ?

Doesn’t NKON.NL ship to UK?