Do I have a duff cell? Max full charge 4.10V.

6 posts / 0 new
Last post
Tommygunn
Offline
Last seen: 4 days 6 hours ago
Joined: 08/29/2015 - 02:33
Posts: 51
Location: Italy
Do I have a duff cell? Max full charge 4.10V.

One of my new(Convoy/Simon) 21700 cells will only charge to 4.10V, so is it knackered and/or degrade quicker than the norm.

Tom.

Edited by: Tommygunn on 12/01/2019 - 14:56
d_t_a
Online
Last seen: 1 min 6 sec ago
Joined: 08/04/2017 - 23:58
Posts: 1478
Location: Manila, Philippines

I’m not very sure, but maybe the “iMax B6” charger was set to charge to 4.10v instead of 4.20v

(usually such chargers have settings/configuration to charge to 4.10v, 4.20v, 4.35v or other nearby voltage). I can’t be too sure, but check its manual.

Most Li-Ion batteries are supposed to charge to 4.20v to get the full capacity. Charging to 4.10v loses just a bit of capacity and can prolong battery life cycle, based on what I read…

maukka
maukka's picture
Offline
Last seen: 12 hours 3 min ago
Joined: 12/31/2015 - 04:15
Posts: 2020
Location: Finland

If I remember correctly, my iMax B6 Mini didn’t charge up to 4.2 volts when Li-Ion was selected. Worked fine with LiPo. Even they both should use the exact same CC/CV charging algorithm to 4.2V.

Tommygunn
Offline
Last seen: 4 days 6 hours ago
Joined: 08/29/2015 - 02:33
Posts: 51
Location: Italy

It’s odd because the other cell, of the same spec, charges to 4.2V on the B6. When I contacted Simon he responded with the charger being the problem and, for that particular cell, I would have to agree because when I charged it on my Adeaska SQ2 it came up to 4.2V.

Tom.

AguassissiM
AguassissiM's picture
Offline
Last seen: 5 hours 17 min ago
Joined: 12/04/2018 - 19:20
Posts: 171
Location: Canada

Like your battery holder Tom Thumbs Up Beer Big Smile

***Rofis MR70 - just perfect *TurnRaise - Cree XM-L2 ***Catapult V6 - awesome ***BLF Q8 - spring mod
***BLF Mini ***BLF Micro ***Haikelite MT09R ** Convoy C8 ***BLF D80v2 SST40***

snakebite
snakebite's picture
Offline
Last seen: 1 day 16 hours ago
Joined: 11/20/2013 - 20:21
Posts: 1846
Location: dayton oh

whats your safety timer setting?
deeper discharge=longer charge time.

Tommygunn wrote:
It’s odd because the other cell, of the same spec, charges to 4.2V on the B6. When I contacted Simon he responded with the charger being the problem and, for that particular cell, I would have to agree because when I charged it on my Adeaska SQ2 it came up to 4.2V.

Tom.