How long do they hold a charge for cordless edger?

I use in my Black & Decker weed whacker and they typically last about 15-20 minutes per charge so I keep a few of them charged up when doing yard work so I can quickly swap them out. Lifespan is about 3 years until they need to be replaced. I live in PA and so use for about 7 months per year.

Will this work on a b&d nlp1800 gator

Sorry can't find your model, these batteries are compatible with all Black and Decker 18v cordless power tools.

Can these replacement batteries be used with my original black and decker charger?

Sure, It fits all Black+Decker 18-Volt NiCad/ NiMh battery charger 90556254-01, BDCCN24, BDFC240, 90571729-01, 90592363-01, 90592360-01.

Would these batteries fit a grashog black and decker trimmer??

Sorry cannot find the details you provide, If your black and decker trimmer belongs to Black+Decker 18V tools, and your oem battery shape is same as our this battery, then they can be compatible with each. Or please email us a link of your tools to check it clearly.

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Biswaye 2Pack 3.8Ah 18V NICD Compatible with Black&Decker 18V Tools Battery

Product ID: 57194081

Details

Battery Capacity
3.8 amp_hours
Battery Cell Composition
NiCAD
Brand
Biswaye
Number of Batteries
2 Lithium Ion
Recommended Uses For Product
Power Tool

⚡18V Power Output

🔄NiCd Fade-Free Tech

🔋3.8Ah High Capacity

KD 23.17

Duties & taxes included

In stock

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Description

🔋 Power your tools, power your hustle — never run out of juice again!

FADE FREE PERFORMANCE - NiCd cells with no memory effect ensure consistent power and reliability every use.
SEAMLESS COMPATIBILITY - Perfect fit for Black & Decker 18V Firestorm tools and chargers—no adapters needed.
DOUBLE UP FOR EFFICIENCY - 2-pack bundle means you always have a charged battery ready—cut downtime, boost productivity.
CERTIFIED SAFETY QUALITY - Meets FCC, RoHS, and CE standards for peace of mind on every job.
POWER THROUGH YOUR PROJECTS - 3.8Ah capacity delivers longer runtime than original batteries, so you never stop mid-task.

The Biswaye 2Pack 3.8Ah 18V NiCd batteries are high-capacity, fade-free replacements fully compatible with Black & Decker 18V Firestorm cordless tools and chargers. Designed to extend runtime and maintain consistent power without memory effect, these rechargeable batteries meet key safety certifications and come in a convenient two-pack to keep your projects moving without interruption.

Specifications

ASIN	B0746HR2T8
Amperage	3.8 A
Antenna Location	Power Tool
Battery Capacity	3.8 amp_hours
Battery Cell Type	NiCAD
Battery Weight	3.7 pounds
Best Sellers Rank	#31,424 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #316 in Cordless Tool Battery Packs
Brand	Biswaye
Customer Reviews	4.5 4.5 out of 5 stars (3,728)
Included Components	2 * Biswaye 3.8Ah 18V NI-CD Battery Compatible with Black & Decker HPB18-OPE 18-Volt Slide Pack Battery HPB18 244760-00 A1718 FS18FL FSB18 and 18-Volt Firestorm Cordless Power Tools
Item Dimensions	6.6 x 3.6 x 6 inches
Item Weight	16 ounces
Manufacturer	CXAB
Model Name	Compatible with Black and Decker 18-Volt Tools Battery HPB18 244760-00 A1718 FS18FL FSB18
Model Number	HPB18
Number of Batteries	2 Lithium Ion batteries required. (included)
Reusability	Rechargeable
UPC	710825751598
Unit Count	2 Count
Voltage	18 volts

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