1. Li-Ion (xiaomi bm20 3.7v and 804066 3.7V) stored between 3.6 to 3.8v, my home temperature varies between 33-35C. How often should I charge these batteries (weekly, monthly, yearly) to keep them in good condition for long-term storage? If their charge drops too much, they swell or die. 2. AA Ni-MH batteries, storing them empty with zero charge reduces their useful life? If I charged these Ni-MH AA batteries to 100% and stored them at my home temperature varies between 33-35C. How often should I charge them (weekly, monthly, yearly) to keep these batteries in good condition for long-term storage?

doubt batteries

classicsamusaran

Li-Ion (xiaomi bm20 3.7v and 804066 3.7V) stored between 3.6 to 3.8v, my home temperature varies between 33-35C. How often should I charge these batteries (weekly, monthly, yearly) to keep them in good condition for long-term storage? If their charge drops too much, they swell or die.
AA Ni-MH batteries, storing them empty with zero charge reduces their useful life? If I charged these Ni-MH AA batteries to 100% and stored them at my home temperature varies between 33-35C. How often should I charge them (weekly, monthly, yearly) to keep these batteries in good condition for long-term storage?

VatrerPower

For storing your lithium-ion batteries like the Xiaomi BM20 and 804066, it’s best to keep them at 3.6 to 3.8V and check them every 3-6 months, especially since your home is quite warm. Recharge if they drop below 3.6V. For your Ni-MH AA batteries, don’t store them empty; keep them charged to about 50-70% and check every 3-6 months too. If you store them fully charged, make sure to recharge them if needed. High temperatures can be tough on batteries, so try to store them in the coolest spot you can find.

classicsamusaran

’m confused, my temperature varies from 33 to 35 degrees Celsius. The official chargers for AA Ni-MH batteries do not have an LCD displaying the percentage. I don’t have time to measure the batteries monthly with a digital multimeter. I want to maintain a fixed charging schedule. Yesterday I charged AA Ni-MH 100% + 33 to 35 degrees Celsius, but I noticed that after 4 months the voltage drops to 1.08 to 1.25 v for my Toshiba and Mox batteries. Is 3.6 to 3.8 v good for storing Li-Ion? At a temperature of 33 to 35 degrees Celsius, + this voltage of 3.6 to 3.8 v, is it safe to charge it again to 3.6 to 3.8 v every 6 or 7 months?