Why Should You Not Mix Old And New Batteries. To avoid this store old and new batteries separately. So if old batteries are mixed with new batteries this will shorten the life span of new batteries and damage old batteries too.
First never use expired batteries. The problem arises when you try and place old and new batteries in series. It is likely for example that the voltages on the new batteries will be 525 volts each meaning theyre fully discharged while the older batteries will be higher in voltage because theyve built up much greater resistance and did not release much energy.
When they stop either of two things depending on design and application and whether one-use or storage type batteries.
If you can store batteries of the same voltage size chemical composition and even the same brand. The reason is as batteries age they take longer to reach full charge. If you mix old and new batteries in a device you could end up with battery leakage or device damage Duracell warns. It is likely for example that the voltages on the new batteries will be 525 volts each meaning theyre fully discharged while the older batteries will be higher in voltage because theyve built up much greater resistance and did not release much energy.
