<div dir="auto">In my experience, the chucks on their hammer drills do not last. They tend to seize up. Otherwise, we are happy with Milwaukee.<div dir="auto"><br></div><div dir="auto">Jason Szumlanski</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jan 20, 2022, 12:24 PM Dana Orzel <<a href="mailto:dana@solarwork.com">dana@solarwork.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Really Happy with the Milwaukee M18 volt series. Various sized batteries available, & there have to be 150+ tools in the M18 series. I got into the Milwaukee 28 volt originally & what a nightmare; too heavy, replacement batteries were $$$ & life span on the battery was not good.<br>
<br>
I have been told the Milwaukee power tools have steel gears not plastic. The impacts are bomber solid.<br>
<br>
So far cold weather operation is good, no noticeable deficiencies. & I have charged them very cold so the battery charger BM is fairly smart/sensitive. I have noticed if really cold the charger says "broken Battery"<br>
<br>
I Loved the small cooler & reptile heater idea! Great idea!<br>
<br>
<br>
<br>
Dana Orzel Great Solar Works, Inc. <br>
C - 208.721.7003 <a href="mailto:dana@solarwork.com" target="_blank" rel="noreferrer">dana@solarwork.com</a><br>
Idaho Contractor - # 028765 Idaho PV # 028374<br>
NABCEP # 051112-136 <a href="http://www.greatsolarworks.com" rel="noreferrer noreferrer" target="_blank">www.greatsolarworks.com</a><br>
"Responsible Technologies for Responsible People since 1988" <br>
\uf050 Please consider the environment before printing this email.<br>
<br>
<br>
-----Original Message-----<br>
From: RE-wrenches <<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches-bounces@lists.re-wrenches.org</a>> On Behalf Of <a href="mailto:drake.chamberlin@redwoodalliance.org" target="_blank" rel="noreferrer">drake.chamberlin@redwoodalliance.org</a><br>
Sent: Thursday, January 20, 2022 9:32 AM<br>
To: RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>><br>
Subject: Re: [RE-wrenches] Lithium Ion tool batteries<br>
<br>
What lithium battery powered tool brand that has the best performance in freezing weather? My 10 year old+ Makita tool set isn't nearly as powerful as some newer tools. Even with new batteries, the tools have sufficient power in cold weather.<br>
<br>
What is the best brand for cold weather operation?<br>
<br>
Thanks,<br>
<br>
Drake<br>
<br>
Drake Chamberlin<br>
Athens Electric LLC<br>
Ohio Electrical Contractor\u2019s License 44810 CO Master Electrician\u2019s License 4526 NABCEP Certified PV Installation Professional<br>
<br>
---<br>
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<br>
On 2022-01-19 11:58, Alex MeVay wrote:<br>
> Generally, storage or use at cold temperatures shouldn't be an issue, <br>
> as long as the battery can still deliver enough power to operate the <br>
> tool effectively.<br>
> <br>
> Charging though...at cold temperatures, ion mobility goes down. If <br>
> the battery is charged too fast, the lithium ions can't make it into <br>
> the graphite anode fast enough and they start to plate out as metallic <br>
> lithium. At best, this results in a permanent reduction in capacity.<br>
> Next worst from there, the lithium metal can create an internal soft <br>
> short, immediately or at a later point in time, resulting in high <br>
> self-discharge or a dead cell. Worst case, it turns into a hard short <br>
> and a fire.<br>
> <br>
> In theory, the BMS or charger should prevent charging too fast or too <br>
> cold, but who knows if an edge-case like this is actually implemented<br>
> correctly on any particular battery system. Be careful charging!<br>
> <br>
> Alex MeVay<br>
> <br>
> Genasun * Blue Sky Energy * <a href="http://sunforgellc.com" rel="noreferrer noreferrer" target="_blank">http://sunforgellc.com</a> <br>
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</blockquote></div>