Nukedaddy

Ok, first I must admit that some of my Milwaukee “look-alike” counterfeit batteries are in this mix. Here’s what I am seeing. Some of me small M12 batteries are giving me the red-green no-good flash when charged on my newer dual purpose genuine Milwaukee M12 and M18 charger. But if I put the same battery on one of my older M12 only chargers they charge normally. The voltage, checked with a Milwaukee M12 DVOM is 7.7 VDC. Why? Also, I have a new counterfeit M12 that placed on the charger flashes the red-green blinker of death. New, right out of the box. They came as a pair. The other battery charged normal. The one that blinked r/g tested at 20.2 VDC. Weird! Any suggestion or explanations? Do Milwaukee chargers have kill-pill programming that can detect Chinesium contaminated batteries?

Does anyone know who makes a 4” size grinder for sale in the US that has an M10 threaded spindle? Amazon has adapters to go on M10 and step it up to M14 or 5/8”x11, but no grinder. I want one because AliBaba and Wish.com has inexpensive Diamond core bit to fit for drilling granite and etc. Anyone have or know of one. If it was slow start and variable speed, so much the better!

If you question how bad I have the addiction, I recently counted that I own 14 tubing cutters, no two alike.

I am now retired. First a plumber, the maintenance manager in nuclear power. I am building a shop / mancave 2 miles from my home. Guess why. My wife will get to park her car in a garage for the first time in 20 years. Cheers, KarlwithaK

OK, perhaps I should have known better, but I bought a couple of look-alike M-12 batteries on Wish.com. They look fine and fit, and ran the tools fight out of the box. But when I tried to charge them on genuine Milwaukee chargers (3 different chargers) the Wish batteries caused red-green flashing code for faulty batteries. They seem to charge anyway, but maybe not as fully charged as they should. does Milwaukee put some sort of kill-pill in their batteries or chargers to prevent counterfeit batteries from working with their tools or chargers? Is there a fix for this issue?