Threaded Mode | Linear Mode

Brad Barton · (This post was last modified: 02-20-2016 05:46 PM by Brad Barton.)

(02-18-2016 12:27 AM)wojtek Wrote: One more idea: change the batteries, or check the ones you used for the current they can provide. Correct voltage doesn't mean that the batteries are OK for sure. I still have a set of completely used 4 pieces of N-size batteries of 1980's (Hitachi/Maxell), valid through 1992, which have 1.49V but the current they give is less than 1mA. As they have no traces of any leakage I stiil keep them as a curiosity.

When testing (non-rechargeable) batteries it's a good practice to short the ends together for a few seconds with a paper clip or small wire. This allows you to discharge the 'surface charge' that even a spent battery can build up over time. Careful, the paper clip can get hot, so only hold it for a few seconds. Then test the voltage. A good battery will recover full voltage very quickly.