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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).
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.
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).
Bob
On 6/25/2025 6:00 AM, Jim Stone wrote:
> Thanks, David. Â I hadnâ??t noticed that the Amazon replacement was
> Ni-MH. Â I know a little bit about Li-Ion and Ni-Cad batteries but
> nothing about Ni-MH. Â Does the fact that the replacements would be
> Ni-MH have any impact on my rebuild vs. buy decision?
>
> Jim
>
>> On Jun 25, 2025, at 7:48â?¯AM, DAVID MASSEY <dave1massey@cs.com> wrote:
>>
>> 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.
>>
>> 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.Â
>> 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.
>>
>> BTW I bought a pair of Milwaukee 12V tools and never looked back. I
>> pitched all my Ni-Cad drills and recycled the batteries.
>>
>> Dave
>>
>>
>>
>>
>> On Tuesday, June 24, 2025 at 01:36:47 PM CDT, Jim Stone
>> <1789alpine@gmail.com> wrote:
>>
>>
>> I have an old Bosch 24v miter saw that I would like to be able to
>> continue using for quick, non critical cuts. Â The only problem is
>> that the NiCad batteries wonâ??t hold a charge long enough to be
>> useful. And, I donâ??t think there is a way to utilize other, e.g.
>> Milwaukee M18, batteries in a 24v system. Â Besides, there donâ??t
>> appear to be any adaptors available.
>>
>> So, that leaves me with two choices: rebuild my current batteries or
>> buy new ones on Amazon. Â Iâ??ve taken one of the battery packs apart
>> and can see that it just uses standard Sub C 1.2v batteries - 20 of
>> them! Â Iâ??ve never rebuilt battery packs but it looks pretty straight
>> forward; just time consuming. Â 20 Sub C batteries would run me about
>> $40-50. Â (Having it done professionally looks to cost at least twice
>> that.) Â Or, I could just buy a Chinese-made replacement pack for just
>> a few bucks more.
>> Â (https://www.amazon.com/Exmate-Replacement-Battery-Compatible-BH-2424/dp/B073Z9QHXS/ref=sr_1_17).
>>
>>
>>
>> Iâ??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? Â Any advice from those
>> who have done this before will be much appreciated.
>>
>> Thanks,
>> Jim
>> _______________________________________________
>>
>> Shop-talk@autox.team.net
>> Donate: http://www.team.net/donate.html
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>> Archive: http://www.team.net/pipermail/shop-talk
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>>
>
>
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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>
</div>
<blockquote type="cite"
cite="mid:2CE11D19-5D1C-429E-9830-8444EBEC1850@gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
Thanks, David. Â I hadnâ??t noticed that the Amazon replacement was
Ni-MH. Â I know a little bit about Li-Ion and Ni-Cad batteries but
nothing about Ni-MH. Â Does the fact that the replacements would be
Ni-MH have any impact on my rebuild vs. buy decision?
<div><br>
</div>
<div>Jim<br>
<div>
<div><br>
<blockquote type="cite">
<div>On Jun 25, 2025, at 7:48â?¯AM, DAVID MASSEY
<a class="moz-txt-link-rfc2396E"
href="mailto:dave1massey@cs.com";><dave1massey@cs.com></a> wrote:</div>
<br class="Apple-interchange-newline">
<div>
<div>
<div class="ydp5b697443yahoo-style-wrap"
style="font-family:Arial, Helvetica, sans-serif;font-size:16px;">
<div>
<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.Â
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>
<div dir="ltr" data-setdir="false"><br>
</div>
<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>
<div dir="ltr" data-setdir="false"><br>
</div>
<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>
<div><br>
</div>
<div class="ydp5b697443signature">
<div
style="font-style: normal; font-size-adjust: none; font-weight: normal;
font-stretch: normal; font-size: 12pt; line-height: normal; font-family: Arial,
Helvetica, sans-serif;">
<div
style="font-style: normal; font-size-adjust: none; font-weight: normal;
font-stretch: normal; font-size: 12pt; line-height: normal; font-family: Arial,
Helvetica, sans-serif;">
<div><font size="4">Dave <br>
</font></div>
<div><span
style="font-size: 10pt; font-family: sans-serif;"><br>
</span></div>
<br>
</div>
</div>
</div>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
<div id="ydp39c7469ayahoo_quoted_1269154354"
class="ydp39c7469ayahoo_quoted">
<div class="ydp39c7469ayahoo-style-wrap"
style="font-family:Arial, Helvetica, sans-serif;font-size:16px;">
<div
style="font-family:'Helvetica Neue', Helvetica, Arial,
sans-serif;font-size:13px;color:#26282a;">
<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>
</div>
<div
style="font-family:'Helvetica Neue', Helvetica, Arial,
sans-serif;font-size:13px;color:#26282a;border-left: 1px solid
#ccc;padding-left: 8px;margin: 0px 0px 0px 8px"
class="ydp39c7469ainline_reply_quote_container"
data-split-quote-node="true">
<div><br>
</div>
<div><br>
</div>
<div>
<div id="ydp39c7469ayiv7389328937">
<div>I have an old Bosch 24v miter saw that
I would like to be able to continue using
for quick, non critical cuts. Â The only
problem is that the NiCad batteries wonâ??t
hold a charge long enough to be useful.
And, I donâ??t think there is a way to
utilize other, e.g. Milwaukee M18,
batteries in a 24v system. Â Besides, there
donâ??t appear to be any adaptors available.
<div><br>
</div>
<div>So, that leaves me with two choices:
rebuild my current batteries or buy new
ones on Amazon. Â Iâ??ve taken one of the
battery packs apart and can see that it
just uses standard Sub C 1.2v batteries
- 20 of them! Â Iâ??ve never rebuilt
battery packs but it looks pretty
straight forward; just time consuming.
 20 Sub C batteries would run me about
$40-50. Â (Having it done professionally
looks to cost at least twice that.) Â Or,
I could just buy a Chinese-made
replacement pack for just a few bucks
more. Â (<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>).
 </div>
<div><br>
</div>
<div>Iâ??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? Â 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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</div>
</blockquote>
</div>
<br>
</div>
</div>
<pre wrap="" class="moz-quote-pre">
</pre>
</blockquote>
<br>
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