<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">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></div><div>Jim<br><div><div><br><blockquote type="cite"><div>On Jun 25, 2025, at 7:48 AM, DAVID MASSEY <dave1massey@cs.com> 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. 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>
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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="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. 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></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 href="https://www.amazon.com/Exmate-Replacement-Battery-Compatible-BH-2424/dp/B073Z9QHXS/ref=sr_1_17" rel="nofollow" target="_blank">https://www.amazon.com/Exmate-Replacement-Battery-Compatible-BH-2424/dp/B073Z9QHXS/ref=sr_1_17</a>). </div><div><br></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></div><div>Thanks,</div><div>Jim</div></div></div>_______________________________________________<br><br><a href="mailto:Shop-talk@autox.team.net" rel="nofollow" target="_blank">Shop-talk@autox.team.net</a><br>Donate: <a href="http://www.team.net/donate.html" rel="nofollow" target="_blank">http://www.team.net/donate.html</a><br>Suggested annual donation $12.96<br>Archive: <a href="http://www.team.net/pipermail/shop-talk" rel="nofollow" target="_blank">http://www.team.net/pipermail/shop-talk</a> <a href="http://autox.team.net/archive" rel="nofollow" target="_blank">http://autox.team.net/archive</a><br><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/shop-talk/dave1massey@cs.com" rel="nofollow" target="_blank">http://autox.team.net/mailman/options/shop-talk/dave1massey@cs.com</a><br><br></div>
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