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I'm assuming the Panasonic IMR Hybrid High Drain is charged like any other Li-ion battery. Just put it into a charger for 3.7V Li-ion batteries. When the charger light turns solid green, it's done. Don't leave the battery in the charger for very long after the light goes solid green.
An inexpensive DMM (digital multi-meter) is a helpful tool for anyone who uses these batteries. Full charge is somewhere between 4.13 and 4.20V. I like to recharge when the battery drains to somewhere between 3.4 and 3.7V. Many APVs have a voltage metering circuit built-in with a digital display or indicator light to show you when battery voltage is low. Never let the battery discharge below 3.2V.
I check all of my batteries (I keep eight 14650 ICRs in rotation) for voltage before and after charging.
An inexpensive DMM (digital multi-meter) is a helpful tool for anyone who uses these batteries. Full charge is somewhere between 4.13 and 4.20V. I like to recharge when the battery drains to somewhere between 3.4 and 3.7V. Many APVs have a voltage metering circuit built-in with a digital display or indicator light to show you when battery voltage is low. Never let the battery discharge below 3.2V.
I check all of my batteries (I keep eight 14650 ICRs in rotation) for voltage before and after charging.
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Did a bit of reading on this so as to get the most out of my IMRs. To keep it short I've gathered that it's best not to take them all the way to 4.2 when recharging. It fact, to get the longest life out of them I try to not let them go over about 3.95. True, I have to change them more often but over all will get much more use out of them. It's also best to keep them cool when not in use.
From what I've read, 4.20V is not much of an issue. Most recommendations I've seen just say don't go over 4.20V.
Charging to 4.20V gives you the maximum safe battery capacity, but at the expense of battery lifespan. So yes, terminating charge below 4.20V yields longer life than 4.20V.
I have several identical chargers. All but one charge to between 4.15 and 4.20V. One of them goes all the way to 4.20.
Charging Lithium-Ion Batteries
Charging to 4.20V gives you the maximum safe battery capacity, but at the expense of battery lifespan. So yes, terminating charge below 4.20V yields longer life than 4.20V.
I have several identical chargers. All but one charge to between 4.15 and 4.20V. One of them goes all the way to 4.20.
Charging Lithium-Ion Batteries
How many charge cycles are you getting by terminating at 3.95V?
I'm having problems charging the 18650 flat top battery that shipped with my eVic. Left it in the trustfire dual bay charger for over 6 hours and it was still red. Any trick to charging these flat tops?
That happened to me with my first flat top battery. It was upside down.
I was used to a button top - so just put the flat end on the negative. Works when there is only 1 flat end, but not 2. Something to check, at least.
I think you would have been more likely to damage the charger than the cell. It looks like Trustfire chagers have reverse polarity protection - but I would check the specifications for you specific model.
There are many people on this forum that are experts as to batteries. You might want to post this question specifically, maybe in the technical questions forum, for better advice.
(Edit: I probably would have used another form of "specific" if there was one. Girl needs a thesaurus.)
There are many people on this forum that are experts as to batteries. You might want to post this question specifically, maybe in the technical questions forum, for better advice.
(Edit: I probably would have used another form of "specific" if there was one. Girl needs a thesaurus.)
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I've tried researching that question myself too. My findings so far (of course don't know if they are all scientifically accurate, but hey, beats what I know about these batteries lol)
- Charge fully on first time use.
- Consider having spare batteries and alternate between them to extend their life cycle and reduce constant stress from charging/using frequently.
- Never store a battery with full charge for an extended period of time.
- Once a battery is fully charged, remove them from the charger (I don't charge them overnight while I sleep)
- Try not to fully drain your battery often. Start charging them around 3.5v (usually the cutoff point anyways on some APV's)
- Do a deep cycle charge maybe once a month
Hope this helps!
- Charge fully on first time use.
- Consider having spare batteries and alternate between them to extend their life cycle and reduce constant stress from charging/using frequently.
- Never store a battery with full charge for an extended period of time.
- Once a battery is fully charged, remove them from the charger (I don't charge them overnight while I sleep)
- Try not to fully drain your battery often. Start charging them around 3.5v (usually the cutoff point anyways on some APV's)
- Do a deep cycle charge maybe once a month
Hope this helps!
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