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expired Posted by BabyBubba • Last Thursday
expired Posted by BabyBubba • Last Thursday

LawnMaster 24V 4.0Ah Battery for Cordless Power Tools + Free Shipping w/ Prime $6.99 at Woot!

$6.99

$60

88% off
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Woot! has New LawnMaster 24V 4.0Ah Battery for Cordless Power Tools for $6.99. Shipping is free with Amazon Prime, otherwise $6 per order.

A very hot deal price for extra batteries if you have LawnMaster equipment.

Might also be a cheap source of high quality cells for the hobbyist or those rebuilding battery packs for other tool brands.

https://electronics.woot.com/offe..._cd_deal_5
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About the Poster
Woot! has New LawnMaster 24V 4.0Ah Battery for Cordless Power Tools for $6.99. Shipping is free with Amazon Prime, otherwise $6 per order.

A very hot deal price for extra batteries if you have LawnMaster equipment.

Might also be a cheap source of high quality cells for the hobbyist or those rebuilding battery packs for other tool brands.

https://electronics.woot.com/offe..._cd_deal_5

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Last Thursday
29 Posts
Joined Oct 2016
Last Thursday
IAmFuzzyWuzzy
Last Thursday
29 Posts
Anyone know what cells this uses? Googling hasn't shown much of anything.
Last Thursday
1,493 Posts
Joined Dec 2005
Last Thursday
sleeping
Last Thursday
1,493 Posts
Does anyone know where to get an lawnmaster to dewalt or milwaukee battery adapter?
Last Thursday
1,271 Posts
Joined Jan 2011
Last Thursday
GuitsBoy
Last Thursday
1,271 Posts
Thanks OP! In for 5 at this price.

Not sure what cells they are, but the website seems to state that they are atleast lithium ion.
https://lawnmaster.com/lawnmaster...h-battery/

Gonna see if I can design and 3d print an adapter for my porter cable tools. Hopefully the extra 4v wont fry them. Otherwise, I'll simply rip the cells out and use them for other projects. Hard to find 18650s for anywhere close to a dollar these days, assuminug that's what these are.
Original Poster
Pro
Last Thursday
3,459 Posts
Joined Apr 2021
Last Thursday
BabyBubba
Original Poster
Pro
Last Thursday
3,459 Posts
Quote from GuitsBoy :
Thanks OP! In for 5 at this price.

Not sure what cells they are, but the website seems to state that they are atleast lithium ion.
https://lawnmaster.com/lawnmaster...h-battery/ [lawnmaster.com]

Gonna see if I can design and 3d print an adapter for my porter cable tools. Hopefully the extra 4v wont fry them. Otherwise, I'll simply rip the cells out and use them for other projects. Hard to find 18650s for anywhere close to a dollar these days, assuminug that's what these are.
I hope the adaptation works out well. Depending on the onboard circuitry, you may be able to pull a cell or 2 out to match your Porter Cable voltage and charger. Although with BMS that sounds a bit unlikely. Worst case you're getting a bunch of brand new (and probably brand name) cells that are likely a direct swap for a tired old pack.

I posted these for guys like you who see the value and want to do some tinkering on the cheap. Once you receive them I'd love to hear about your findings.
Last Thursday
253 Posts
Joined Jun 2020
Last Thursday
tiggerooze
Last Thursday
253 Posts
Quote from GuitsBoy :
Hard to find 18650s for anywhere close to a dollar these days, assuminug that's what these are.
try batteryhookup.com. No affiliation, just bought lots of salvaged 18650s from them
Last Thursday
1,271 Posts
Joined Jan 2011
Last Thursday
GuitsBoy
Last Thursday
1,271 Posts
Quote from tiggerooze :
try batteryhookup.com. No affiliation, just bought lots of salvaged 18650s from them
Cool, thanks for the suggestion. Not much selection in the way of new 18650s or 21700s, but those reclaimed battery packs seem like they could be a smokin deal. (perhaps literally).

Previously, I picked up 100 new 2500 mah 18650s for $1 each from another site, and have used about half. Theyre great for small remote IoT or arduino projects, like weather stations, or tilt hydrometers for homebrewing. But the capacity is a little low for flashlights. They'd probably be fine for recelling 20v tool packs, but if I recall the discharge capacity was a bit low. The reclaimed packs from batteryhookuyp might be fine, or they might not be. You never know how much life those cells have remaining. But these lawnmaster packs presumably pack twelve brand new 2000 mah 18650s each, coming out to 58 cents a piece. And I'd think they'd have to be rated at a high enough discharge rate to run most tools.

Once I give them a look over, if theyre still in stock, I might buy another 5.
Last Friday
253 Posts
Joined Jun 2020
Last Friday
tiggerooze
Last Friday
253 Posts
In case anyone comes back here or these go on sale again, they are 12 18650's, and the BMS is labeled "FO2214.33.00" so they apparently are also the batteries used for "ETG" robotic mowers.
They are spot welded into the case in such a way that you have to destroy the case to identify the cells. If I decide to go that are I will post an update.
They case is labeled "6INR19/66-2" but that looks like a generic battery pack designation.

Edit: the cells are "SunPower" INR18650-2000

So probably mediocre at best. Have not tested capacity.
Last edited by tiggerooze March 14, 2025 at 07:16 PM.
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