Reliability of batteries and their damage to equipment

[jhalphen]

Hi Guys,

Let me share my experience.

Having a lot of battery powered equipment in my collection, transistor radios, micro-TVs & test gear, non-leaking power packs have always been a worry for me.

10 years ago, i switched all to Ni-Mh rechargeables. I was very happy, no leakage, but as they loose 80% of the initial charge after 3 months, most demos ended up with swapping batteries at demo time.

Since a couple of years i have swapped 1st generation Ni-Mh batteries for the newer 2nd generation sold as pre-charged and which keep their charge up to 80% of nominal after one year even if unused. These are a Godsend for the collector. Also, more importantly, none have leaked (so far).

I now differentiate according to use:
Collector items: 2nd generation Ni-Mh

Heavy duty frequent use such as LED flashlights: highest A/h rating classic Ni-Mh.

Very long term "forget when changed" items (remote controls, test gear): Lithium.

Best Regards

jhalphen
Paris/France