Electronics > Projects, Designs, and Technical Stuff

good 9V battery

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Alex Eisenhut:
 :palm:

I can't believe that in the 21st century we are unable to build a 9V battery that lasts more than a few months in a DMM.

I avoid Duracell because of their proven track record of dismal failure. So I bought a store brand alkaline 9V here in Montreal, it's the brand of a big chain pharmacy. It's usually good stuff.

This morning the DMM was dead. I took the battery out and measured with my analog meter and it's 0V. Flat line. Took the battery apart and it's 6 x 1.5V cells and they're all covered in white corrosion.  >:(

We're talking 6 months here, with very little use.

Is there a known good brand?

LaserSteve:
Procell

BravoV:
Panasonic

RoGeorge:
I am using 9V NiMH rechargeable for one of the DMMs. Look for the "Low Self Discharge" ones. They can stay charged for many months, maybe years. I have 2 of them, one in the DMM, one as backup. The price was about 2-3 times more then an alkaline, but I already have them for more then 2-3 years now. A charger is not mandatory to buy, they can be charged with a simple voltage source series with a resistor (charge for 7hr at 40mA). Bought them from LIDL supermarket.

The brand is Tronic, and they look like that:
https://www.lidl.de/de/tronic-ready-to-use-ni-mh-akkus/p205708

amitchell:
Maybe this is worth a try 2 x 600mAh lithium rechargeable with charger:

https://www.amazon.com/EBL%C2%AE-Battery-Charger-Rechargeable-Batteries/dp/B00EY6BZWS/tag=metaefficient-20?th=1

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