My old battery has P/N r8408-mg-15-06fxew on it. Not BP91001. Is this the right replacement battery?

The question is,,what are you using the battery for? I bought 2 Earthwise cordlest Blowers Model # C820018 and 3 BP91001 batt's (an extra one to stay charged). The battery works great for this equiptment. It may be used for other tools, I believe.Charles

What charger goes with this battery?

EarthWise 18 Volt, Battery Charger, P/N. R8414-740101.

Will this battery fit the earthwise lst 10012 trimmer?

I do not know for sure, check with earthwise.

how long must i charge it before i use it for the first time?

Until the green light comes on on the charger. Took a couple hours I think the first time.

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Earthwise BP91001 Replacement 18-Volt NiCad Battery for Models CPS40008, CST00012, CHT10122, CB20018

Product ID: 3582519

Details

Battery Cell Composition
NiCAD
Brand
Earthwise
Number of Batteries
1 Product
Recommended Uses For Product
string
Voltage
18 Volts

⚡Long-lasting rechargeable life

🔋18V NiCad power boost

🔧Easy plug-and-play install

Description

🔋 Power your green routine with Earthwise’s reliable 18V battery—because your tools deserve the best!

POWER UP YOUR TOOLS - 18-Volt NiCad battery delivers consistent, reliable energy for your Earthwise cordless yard tools.
CHARGE LESS DO MORE - Rechargeable design ensures extended use with minimal maintenance—just charge and conquer.
EFFORTLESS SWAP GO - Quick, no-fuss installation means less downtime and more yard time.
ECO FRIENDLY YARD CARE - Earthwise’s clean air choice keeps your outdoor space green and your conscience clear.
TRUSTED BY PROS FAMILIES - Highly rated with 4.3 stars and loved for durability—join thousands who never settle for less.

The Earthwise BP91001 is a rechargeable 18-Volt NiCad replacement battery compatible with multiple Earthwise cordless yard tools. Lightweight and easy to install, it offers long-lasting power with minimal maintenance, supporting eco-friendly outdoor tool use. Highly rated by users for durability and performance, it’s the perfect upgrade to keep your tools running strong.

Specifications

ASIN	B004H4X76E
Antenna Location	string
Battery Cell Type	NiCAD
Brand	Earthwise
Customer Reviews	4.3 4.3 out of 5 stars (826)
Global Trade Identification Number	00052909910010
Item Dimensions	7.5 x 5.5 x 3.5 inches
Item Weight	1.9 Pounds
Manufacturer	American
Model Name	cps40008
Model Number	BP91001
Number of Batteries	1 Product Specific batteries required.
Reusability	Rechargeable
UPC	052909910010
Voltage	18 Volts

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