Some tool batteries only charge up to 4V per cell or 20V in 5S config, yet they still claim full capacity. Maybe because if they charged all the way up it will take 50% longer in the CV phase and probably degrade the battery when stored full.
The batteries from my Mavic air drone will auto discharge to 3.8V after not being used for a couple days.
Could be just perception but I store batteries with relatively low cycles at 4.2V for months at a time and after a while I notice they don’t stay very long at 4.15V+ after removing from the charger, the capacity however doesn’t drop more than 10% when tested (4.13 vs fresh cycle).
I’ll use the same light.
I am not interested in the empty to full battery capacity, i am interested in how much juice goes in when discharged from 4.2V to 4V and charged up to 4V then charged to 4.2V.
Hi everyone,
I hope it’s okay to ask this here — I couldn’t find a more relevant topic.
I’m wondering if anyone has experience using external charge limiters (like hardware-based USB-C devices) to help prevent overcharging and maybe reduce the risk of deep discharges or current spikes on lithium-ion batteries?
I came across a product called Li-IQ Casual (lithium iq.com/products/li-iq-casual/) that limits charging to 80%, and I’m considering ordering a few units for our office to test with phones and tablets that stay plugged in most of the day.
Does anyone here think this kind of device could meaningfully prolong battery life, or is it just marketing?
I think instead you should study settings of your devices. They might already have the feature in question.
Some laptop manufacturers’ software can limit battery charge.
And my Samsung phone has these settings:
