Hello,

As a witness to the possibility, I show my L-358 with mods. The meter seriously sucks power. As I recall, it consumes about 300mA when switched on. This amount of energy being drained from the relatively small orignial battery means you need expensive replacements when you travel miles from civilisation.

This mod is 4xAA batteries in a holder with a home designed regulator. The batteries are Eneloop type which hold their charge very well and do not exhibit a memory.

It does become more cumbersome and I have to admit I wonder why the designers can't take up-time more seriously.

I can now use the meter for about 2 weeks before I worry about the state of charge. The batteries are also easily charged by an in-vehicle charger anyway.

So, if you are wondering whether it can be done, here it is.

Cheers,