buckeyefarmer
Epic Contributor
I have replaced norelco batteries, just solder in a new one,
Yeah, I've done maybe a half dozen over 50+ years. But this last Norelco shaver seems designed with no way to get the battery out without destroying the circuit board.I have replaced norelco batteries, just solder in a new one,
I’m sure it is. They want to sell new one.Yeah, I've done maybe a half dozen over 50+ years. But this last Norelco shaver seems designed with no way to get the battery out without destroying the circuit board.
It was a promotional 'special edition' on closeout at Fry's, discounted way below normal, likely mfr overstock. (I'm cheap!) It works same as any other Norelco. Internally it really looks like they designed it to prevent battery replacement.

Just for grins I Googled Ryobi replacement batteries. Some aftermarket ones showed up at walmart.com, reviews weren't very good. Didn't see any others listed.It's been many years, I'm afraid I can't give a link.
As for those nah sayers - these batteries were larger in size and had a nice charge indicator on them. I have been working them hard for years and my wife has been abusing them lol, still ticking.
Sure there are imposters and sub quality batteries out there. You do your own research and ultimately you do you.
I recently opened a 2ah oem black and decker battery pack, the battery's were 1.3ah, would love to know how BD got that rating.
On the flip side bad counterfeits are out of control on Amazon
Mixing vendors for Amazon Fulfillment could make warranty claims and disputes problematic.I've read that one of the problems is Amazon puts all the 'identical' products offered by different vendors into the same bin. So when the picker fills your order, it's random luck whether he pulls genuine or counterfeit out of that bin.
Some companies there mastered the copying.I've got a couple of Dewalt knockoffs that I bought in 2020, just as things started getting crazy.
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I didn't realize they were coming from China until I saw the receipt on PayPal.
They have worked fine so far, although lately they haven't kicked the charger off the way they should.
The odd thing is that the only correspondence I ever had with the company was when they got payment preapproved from PayPal. They never sent a confirmation letter or shipping notice... and I never was actually charged for them.
Companies like Alibaba or AliExpress don't seem to care.I assume most of these fake batteries are coming from overseas. It’s tough to shut them down or sue them. If you do lock them out they just change the company name and keep going.
That was my original hope. I opened it up expecting to find a series pack that I could replace a bad cell or the whole set. Like @California's experience, the design had each cell individually embedded into the board with irregular tabs and measuring the voltages across the cells wasn't informative. I suspect that the board equalizes each cell, because the appliance, a Black&Decker "Flex" hand vacuum, runs out of juice, shuts down and then 30 seconds later has more juice, lather, rinse, repeat.you don't need to desolder all of them generally if its an all series pack, its pretty easy to find the bad one, spot welding can be a bit of a learning process as well.
all lithium cells, use a bms correct, what it does is charge each cell individually so they don't become "unbalanced" this can cause stress to the individual cell which can ultimately cause it to catch fire. the bms can also monitor the amount of current allowed, the temperature of the pack, and the voltage cutoff point so the cells don't go bad.The factory battery packs he cracked opened had chips and circuit boards in them. I think these are called BMS (battery management systems?). I think these control the charge rate, maybe slow it down for the last 10%, and help keep the batteries more equally charged. I’ve learned a lot of this from e bike forums which sone of the e bike battery packs can cost $1000 or more.
I suspect the fakes don’t contain this or if it does lower quality and that’s why they lack in performance.