10440 at 0.5A charging?

james_butcher · 2019-03-30T19:38:23.000Z

i only have xtar wp2 (0.5A or 1A) and (2A i think) chargers

would it be ok to charge 10440 at 0.5a? i dont care about life of batteries so much but dont want them to explode.

thx

teacher · 2019-03-30T21:05:41.000Z

What is the capacity of your 10440’s?

~~Mine are all above 500mAh so charging them at .5A is less than 1C~~.
~~That is what I do, charge em’ at .5A~~

If your 10440’s capacity are less than 500mAh, .5A might be a bit to much. That would be charging them above 1C

james_butcher · 2019-03-30T20:05:24.000Z

teacher:

What is the capacity of your 10440’s?

Mine are all above 500mAh so charging them at .5A is less than 1C.
That is what I do, charge em’ at .5A :+1:

mine are 350mah soshine.

i didnt think you could get 500mah 10440 (trustfires have real capacity less than 300mah from what i read)?

teacher · 2019-03-30T21:02:14.000Z

…. Disregard what I wrote about “my 10440’”. I had a ‘senior moment’ & was thinking about my AAA Eneloops. My bad.

I charge my 10440’s at .2A

I think anything up to 1C would be fine though. I just happen to use a charger I have that does .2A

BlueSwordM · 2019-03-30T21:23:27.000Z

@james butcher, what charger do you have?

Unlike NiMH rechargeables, you do not need high current(0,5A+) to charge them properly.

Therefore, for good cycle life, try to charge at 0,3A or lower.

james_butcher · 2019-03-30T21:47:52.000Z

thanks teacher

@blueswordm ive only got xtar wp2 so 0.5a is lowest i have.

just want to know if it will be safe.

fran82 · 2019-03-30T22:21:36.000Z

If they are IMR they may not explode but the lifetime will be affected a bit.

I charge my 10440 efest IMR at 500mA since about 2013 and still going strong….

teacher · 2019-03-31T00:06:38.000Z

@ james butcher

I found this info on the Efest 10440 at Illumn.

According to the info printed there, as well as what was posted above by fran82; you should be good to go charging your 10440’s at up to .5A without undue danger.
.

Efest IMR10440 V1 350 mAh High Discharge Flat Top
SKU:2201
Availability: In Stock

$3.00
PRODUCT DETAILS
Efest IMR10440 V1 350 mAh High Discharge Flat Top

* Please Note: Do NOT charge these cells above 0.5A, this will reduce the life of the battery. For longevity, charge current should be below 0.5A

Specifications:
Typical Capacity: 350 mAh
Nominal Voltage: 3.7V
Discharge End Voltage: 3.0V
Max Recommended Charging Current: 0.5A
Charging Voltage: 4.20+–0.05V
Max. Continuous Discharging Current: 3A
Internal Resistance: N/A
Dimensions:
43.18mm (L) x 10.16 mm (D)
Weight: 10g

Gebe · 2019-03-31T00:23:42.000Z

James, no worries. They will not explode. May shorten the life of them by a bit and most recommend charging at 0.25A but you’re safe at 0.05A.

Macka17 · 2019-03-31T07:13:19.000Z

I use Soshine mainly in the 10/14/26500 cells.
The 10440’s are Li-Po 280mah. and charge sweet
with my LiitoKala 202 charger on 1\2a.
Over 6 months now and none dead.
I doubt you’d get a “true” 500mah out of a 10 series? would you.
Only in Chinese figures.

james_butcher · 2019-03-31T12:09:43.000Z

thanks for all the info, i charged them last night and they got quite warm so took them of at 3.8v.

ill try again today since my fears have been settled.

teacher · 2019-03-31T14:12:18.000Z