I’m playing around with my new S4+ V3 discharging two 30Qs at 1 amp. The temperature indicated on the display showed a steady 58-60°C. I don’t know what 60°C feels like, but when I touched the batteries they didn’t seem like they were that hot. Could the temperature sensors be influenced by the heat generated by the electronics discharging the batteries, making it seem like the batteries are hotter than they really are?
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Usually 50-60°C is the limit most people can handle without the feeling of getting burned. If the batteries don’t feel scorching hot, I’d assume it’s the heat of the discharge load in the charger.
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suggest you invest in an inexpensive IR Thermometer
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60° is so hot that you don’t want to touch it for a second. Even 45° is still too warm to hold in your hand for too long.
So if you can touch the cells with no problem, don’t be bothered by what the charger shows you.
Does this charger have a fan? There is a reason why the Opus BT-C3100 has one…
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Nope, no fan in it.
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Most discharging is done with some kind of resistance. That causes heat in the electronics as well as the battery.
The 30Q shrugs off 1A discharge. Most of the heat is the (dis)charger.
An external fan can help a lot. A lot of people hate the whiny little fan in the Opus, but it’s doing a job. I use an external fan anyway/also.
Scalding can occur at various temperatures, with the severity depending on both the water temperature and exposure time. Here are the key temperatures and times for scalding:
- 160°F (71°C): Scalding occurs in 1 second or less[
- 150°F (65.5°C): Scalding occurs in about 1/2 second[
- 140°F (60°C): Scalding occurs in 1-5 seconds[
- 133°F (56°C): Scalding occurs in 15-16 seconds[
- 130°F (54°C): Scalding occurs in about 35 seconds[
- 125°F (52°C): Scalding occurs in about 2 minutes[
- 120°F (49°C): Scalding occurs in about 10 minutes
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Ok. It seems like most of the temperature the charger is sensing is from the electronics and not the batteries.
I was just looking at the 30Qs data sheet and was wondering if anyone knows what “recommended recharge release <45°C” and “recommended re-discharge release < 60℃” means?
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Molicel INR-21700-P42A factory specs
Temperature
Charge 0°C to 45°C
Discharge -40°C to 60°C
I did a short test on my Vapcell S4 Plus V3.0 for one hour with two Samsung INR 21700 50E on 1 & 4 slots at 1A, in the beginning the temperature was 20 °C (68 F) and now is 52 & 57 °C (125.6 & 134.6 F), yes is somewhat hoter than the 20 °C of course but nothing crazy, i touched the batteries on my skin on the hand and on the face and it was just warm [i know about temperature especially on metals because i was working with copper up to 450 - 500 °C (842 - 932 F) and it was flaming red hop ]
I let the batteries and the charger off for about half an hour to cool down, and u put them back for charging and the temperature was 26 ° C (78.8 F)
So for me the charger is working pretty good and i don’t find any issue, it just getting hotter on discharge mode because it has to somehow “release - exhaust” the losing - discharging energy from batteries !
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To continue in the process… :
The batteries and the charger are on charging mode for about one hour now, and the temperature is back to normal level at 20 - 21 °C, so is pretty much the same temperature as in the beginning of the test !
So again, i don’t find any problem - issue (at least for me) !
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