Check Battery (Cb) Function & Low Batt Light

[Kemosabe]

my Cb function is strange to me. it will give me different battery voltages depending on how quickly i check the batt after screwing it in.

for example, if i pop in a fresh batt and Cb it right away, the voltage will be 4.0 or less. this is on a fresh batt, direct from the charger. if i wait several minutes, the voltage will most likely be at 4.0v, but once in a while, its 4.1. my charger's left bay charges up to 4.16, and the right bay goes up to 4.18, according to my multimeter. if i overcharge the batts, they go up to 4.20. ive only overcharged my batts once, but i finally did get the provari to read 4.2v (LOL). im guessing that the provari rounds down to the nearest tenth of a volt, and never rounds up. thoughts?

my other quandry is regarding the low batt indicator. usually, it flashes at 3.4v. but not always. sometimes i will go into Cb to see whats left and i'll see 3.4v, or 3.3v, but the light is not flashing. i change the battery anyway. another time (and this only happened once), the provari went from normal (no blinking light whatsoever) to the rapid flash. and then quickly died. what in the world is going on here?

btw im using AW IMR 18490s.

 

[L7D4N]

Take a finger and put it inside the mod, and rub all the carbon buildup off the positive plate on the circuit board. Alternatively, you can use a long, one-sided Q-Tip and clean it with isopropyl alcohol as well.

The carbon buildup that occurs during use will cause erratic battery readings, and cleaning the battery and positive pin will ensure your battery readings are accurate. You'll also want to clean the threads on the cap and inside the tube, and dab some noalox on there to ensure your ground is good.

 

[Kemosabe]

Take a finger and put it inside the mod, and rub all the carbon buildup off the positive plate on the circuit board. Alternatively, you can use a long, one-sided Q-Tip and clean it with isopropyl alcohol as well.

The carbon buildup that occurs during use will cause erratic battery readings, and cleaning the battery and positive pin will ensure your battery readings are accurate. You'll also want to clean the threads on the cap and inside the tube, and dab some noalox on there to ensure your ground is good.

good call! i totally forgot about cleaning the positive plate. ive only done it once since august
also, i almost always check my remaining battery voltage under load. i hadnt realized that the provari checks under load when an atty/tank is screwed on. which is why the voltage was a bit lower than i had been expecting.

 

[L7D4N]

Yeah, I actually had a lot of grime buildup after a months of use on my first ProVari last year, and not only would the battery show 3.4v under load on a full charge, but vaping it would make the chip whine like an old CRT TV would. It freaked me out until I figured out what it was, then starting getting meticulous with my cleaning

 

[LV SuzyQ]

Take a finger and put it inside the mod, and rub all the carbon buildup off the positive plate on the circuit board. Alternatively, you can use a long, one-sided Q-Tip and clean it with isopropyl alcohol as well.

The carbon buildup that occurs during use will cause erratic battery readings, and cleaning the battery and positive pin will ensure your battery readings are accurate. You'll also want to clean the threads on the cap and inside the tube, and dab some noalox on there to ensure your ground is good.

Ty L7!

I didn't know that.. I will be cleaning my mini now Ty!

 

[Kemosabe]

Yeah, I actually had a lot of grime buildup after a months of use on my first ProVari last year, and not only would the battery show 3.4v under load on a full charge, but vaping it would make the chip whine like an old CRT TV would. It freaked me out until I figured out what it was, then starting getting meticulous with my cleaning

woah, i didnt realize it could get that bad. i wonder what exactly is creating the grime...i mean, the batt is clean, the inside never sees dirt akaik, but sure enough, grime happens

 

[L7D4N]

Sorry, I meant grime on my end cap that caused the whine, not the battery.

The bad ground is what ended up causing the whining noise, but it just reinforces the need for routine cleaning and upkeep to ensure everything is working properly. I give mine a alcohol bath once a month, clean the end cap threads every 2 weeks, and wipe off the positive pin and battery after each battery cycle. Tbh, I don't even think about it anymore, its just second nature for me.