If you rebuild you will need Ni-Cad batteries. Ni-MH or Li-ion batteries will not play well with Ni-Cad chargers. Those alternate chemistries require a battery management circuit. Maybe you can buy those but I've never seen any on offer. I haven't looked either, though. <br><br><div id="ymail_android_signature"><a id="ymail_android_signature_link" href="https://play.google.com/store/apps/details?id=com.aol.mobile.aolapp">Sent from AOL on Android</a></div> <br> <blockquote style="margin: 0 0 20px 0;"> <div style="font-family:Roboto, sans-serif; color:#6D00F6;"> <div>On Wed, Jun 25, 2025 at 8:00, Jim Stone</div><div><1789alpine@gmail.com> wrote:</div> </div> <div style="padding: 10px 0 0 20px; margin: 10px 0 0 0; border-left: 1px solid #6D00F6;"> <div id="yiv5426006398"><div>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?<div><br clear="none"></div><div>Jim<br clear="none"><div id="yiv5426006398yqt48677" class="yiv5426006398yqt4222733126"><div><div><br clear="none"><blockquote type="cite"><div>On Jun 25, 2025, at 7:48 AM, DAVID MASSEY <dave1massey@cs.com> wrote:</div><br clear="none" class="yiv5426006398Apple-interchange-newline"><div><div><div style="font-family:Arial, Helvetica, sans-serif;font-size:16px;" class="yiv5426006398ydp5b697443yahoo-style-wrap"><div><div dir="ltr">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><div dir="ltr"><br clear="none"></div><div dir="ltr">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"><br clear="none"></div><div dir="ltr">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 clear="none"></div><div class="yiv5426006398ydp5b697443signature"><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 clear="none"></font></div><div><span style="font-size:10pt;font-family:sans-serif;"><br clear="none"></span></div><br clear="none"></div></div></div></div>
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On Tuesday, June 24, 2025 at 01:36:47 PM CDT, Jim Stone <1789alpine@gmail.com> wrote:
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<div><div id="yiv5426006398ydp39c7469ayiv7389328937"><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.<div><br clear="none"></div><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 rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://www.amazon.com/Exmate-Replacement-Battery-Compatible-BH-2424/dp/B073Z9QHXS/ref=sr_1_17">https://www.amazon.com/Exmate-Replacement-Battery-Compatible-BH-2424/dp/B073Z9QHXS/ref=sr_1_17</a>). </div><div><br clear="none"></div><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 clear="none"></div><div>Thanks,</div><div>Jim</div></div></div>_______________________________________________<br clear="none"><br clear="none"><a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:Shop-talk@autox.team.net" target="_blank" href="mailto:Shop-talk@autox.team.net">Shop-talk@autox.team.net</a><br clear="none">Donate: <a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://www.team.net/donate.html">http://www.team.net/donate.html</a><br clear="none">Suggested annual donation $12.96<br clear="none">Archive: <a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://www.team.net/pipermail/shop-talk">http://www.team.net/pipermail/shop-talk</a> <a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://autox.team.net/archive">http://autox.team.net/archive</a><br clear="none"><br clear="none">Unsubscribe/Manage: <a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="http://autox.team.net/mailman/options/shop-talk/dave1massey@cs.com">http://autox.team.net/mailman/options/shop-talk/dave1massey@cs.com</a><br clear="none"><br clear="none"></div>
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