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I'll offer a general observation: Chinese batteries are crap, and a
lot, if not most, of the 'name brand' batteries--Duracell,
Energizer, etc.--you see on the Brazilian rainforest site are
counterfeit (although you'll occasionally get a Chinese battery that
is reasonably good). I got a 'tip' off Reddit that DigiKey sells
legit batteries, and I just ordered some Panasonic CR2450s from them
(both my welding helmet and Mustang key fobs use them).<br>
<br>
I have an old Makita 9V drill that I don't use, but can't bear to
chuck (pun intended). I bought knock-off batteries and they barely
hold a charge, so there it sits, full of memories but useless. I'm
all in on DeWalt, but you even have to be careful buying DW
batteries as there are a lot of deceitful websites that advertise
'DeWalt' but sell Chinese crap.<br>
<br>
I think best you can do is buy some of the counterfeits and hope for
the best, or put your miter saw in your personal museum (like my
Makita).<br>
<br>
Bob<br>
<br>
<div class="moz-cite-prefix">On 6/25/2025 6:00 AM, Jim Stone wrote:<br>
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Thanks, David. I hadn’t noticed that the Amazon replacement was
Ni-MH. I know a little bit about Li-Ion and Ni-Cad batteries but
nothing about Ni-MH. Does the fact that the replacements would be
Ni-MH have any impact on my rebuild vs. buy decision?
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<div>Jim<br>
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<div>On Jun 25, 2025, at 7:48 AM, DAVID MASSEY
<a class="moz-txt-link-rfc2396E" href="mailto:dave1massey@cs.com"><dave1massey@cs.com></a> wrote:</div>
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<div dir="ltr" data-setdir="false">I used to have
an old Makita drill that came with Ni-Cad a
battery that eventually stopped being usable. I
bought a pair of lithium-based replacement
batteries. On the surface they looked like a
much better option with double the capacity and
they worked with existing drill and charger.
But (there's always a but, isn't there?) to make
Lithium batteries work in a Ni-Cad environment
required a electronic circuit and this circuit
was always on and drew enough power to deplete
the battery overnight. I could charge them up
in the evening and the next morning they would
be close to dead.</div>
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<div dir="ltr" data-setdir="false">But I see these
are Nickel-Metal Hydride batteries. Ni-MH
batteries have characteristics more similar to
Lithium - at least with regards to the charging
regime (I've designed a battery charger for
Ni-MH so I am familiar with this) but are less
susceptible to abuse. I also see the bullet
point about no self-discharge - which was my
problem. This is a $45 gamble (as it is with
most no-name stuff from the Pacific rim) but
YMMV. This might be a good one. Let us know.</div>
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<div dir="ltr" data-setdir="false">BTW I bought a
pair of Milwaukee 12V tools and never looked
back. I pitched all my Ni-Cad drills and
recycled the batteries.</div>
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<div><font size="4">Dave <br>
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<div class="ydp39c7469aquoted-text-header"> On
Tuesday, June 24, 2025 at 01:36:47 PM CDT, Jim
Stone <a class="moz-txt-link-rfc2396E" href="mailto:1789alpine@gmail.com"><1789alpine@gmail.com></a> wrote: </div>
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<div>I have an old Bosch 24v miter saw that
I would like to be able to continue using
for quick, non critical cuts. The only
problem is that the NiCad batteries won’t
hold a charge long enough to be useful.
And, I don’t think there is a way to
utilize other, e.g. Milwaukee M18,
batteries in a 24v system. Besides, there
don’t appear to be any adaptors available.
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<div>So, that leaves me with two choices:
rebuild my current batteries or buy new
ones on Amazon. I’ve taken one of the
battery packs apart and can see that it
just uses standard Sub C 1.2v batteries
- 20 of them! I’ve never rebuilt
battery packs but it looks pretty
straight forward; just time consuming.
20 Sub C batteries would run me about
$40-50. (Having it done professionally
looks to cost at least twice that.) Or,
I could just buy a Chinese-made
replacement pack for just a few bucks
more. (<a
href="https://www.amazon.com/Exmate-Replacement-Battery-Compatible-BH-2424/dp/B073Z9QHXS/ref=sr_1_17"
rel="nofollow" target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://www.amazon.com/Exmate-Replacement-Battery-Compatible-BH-2424/dp/B073Z9QHXS/ref=sr_1_17</a>).
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<div><br>
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<div>I’m sure the replacement batteries
are also made in China, but is there any
reason to assume that rebuilding the
packs myself will result in a better,
longer lasting battery? Any advice from
those who have done this before will be
much appreciated.</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Jim</div>
</div>
</div>
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