[RE-wrenches] Lithium Ion tool batteries

Thu Jan 20 17:15:41 EST 2022

Most all the companies use the same Samsung batteries. 

Here is a video about someone checking that out. 

https://m.youtube.com/watch?v=Plhxnrba2D8

Jay 

> On Jan 20, 2022, at 1:03 PM, Ray <ray at solarray.com> wrote:
> 
> I've had great luck with the Milwaukee M18; I almost never bring in my tool batteries anymore, unless its going to be below 0. Love the cordless shop vac.
> 
> I also use Ryobi, for my less used tools (ie.circular saw) and they have excellent performance for the money.  Not quite as temperature forgiving though.
> 
> As for Milwaukee chucks jamming up;  I only had that happen once after a bunch of hammer drilling in Haiti.  Scrounged all over the village for the special star keys to take apart the chuck, but it just needed to be cleaned.
> 
> Ray Walters
> Remote Solar
> 303 505-8760
> 
>> On 1/20/22 10:24 AM, Dana Orzel wrote:
>> 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.
>> 
>> I have been told the Milwaukee power tools have steel gears not plastic. The impacts are bomber solid.
>> 
>> 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"
>> 
>> I Loved the small cooler & reptile heater idea! Great idea!
>> 
>> 
>> 
>> Dana Orzel                              Great Solar Works, Inc.
>> C - 208.721.7003                       dana at solarwork.com
>> Idaho Contractor - # 028765         Idaho PV # 028374
>> NABCEP # 051112-136                       www.greatsolarworks.com
>> "Responsible Technologies for Responsible People since 1988"
>>  Please consider the environment before printing this email.
>> 
>> 
>> -----Original Message-----
>> From: RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> On Behalf Of drake.chamberlin at redwoodalliance.org
>> Sent: Thursday, January 20, 2022 9:32 AM
>> To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
>> Subject: Re: [RE-wrenches] Lithium Ion tool batteries
>> 
>> 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.
>> 
>> What is the best brand for cold weather operation?
>> 
>> Thanks,
>> 
>> Drake
>> 
>> Drake Chamberlin
>> Athens Electric LLC
>> Ohio Electrical Contractor’s License 44810 CO Master Electrician’s License 4526 NABCEP Certified PV Installation Professional
>> 
>> ---
>> 
>> 
>>> On 2022-01-19 11:58, Alex MeVay wrote:
>>> Generally, storage or use at cold temperatures shouldn't be an issue,
>>> as long as the battery can still deliver enough power to operate the
>>> tool effectively.
>>> 
>>> Charging though...at cold temperatures, ion mobility goes down.  If
>>> the battery is charged too fast, the lithium ions can't make it into
>>> the graphite anode fast enough and they start to plate out as metallic
>>> lithium.  At best, this results in a permanent reduction in capacity.
>>> Next worst from there, the lithium metal can create an internal soft
>>> short, immediately or at a later point in time, resulting in high
>>> self-discharge or a dead cell.  Worst case, it turns into a hard short
>>> and a fire.
>>> 
>>> In theory, the BMS or charger should prevent charging too fast or too
>>> cold, but who knows if an edge-case like this is actually implemented
>>> correctly on any particular battery system.    Be careful charging!
>>> 
>>> Alex MeVay
>>> 
>>> Genasun * Blue Sky Energy * http://sunforgellc.com
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