General > General Technical Chat
12V lead acid battery question...
tautech:
--- Quote from: PwrElectronics on May 13, 2024, 11:53:12 pm ---I was just surprised at the behavior here as I have not seen this before. The more modern chargers would not even attempt to charge this as they shut down if the target battery is "too dead".
--- End quote ---
Normal.
Unless there is some charge remaining the modern smart charger will not initiate a charge.
Typically some 6-10V.
However they can be bluffed by momentarily connecting another sound battery in parallel to the dead one which will kick off the charger and the good battery can then be removed.
But as David Hess correctly points out, unused batteries will sulphate and deteriorate, much shortening their life.
For the ordinary LA battery I have a practice of freshening their charge when not in use every 4 weeks with an overnight charge from a smart charger.
YMMV
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