

🔋 Power up your legacy tools with confidence and never miss a beat!
The FirstPower 3.7Ah 14.4V DW9091 Battery is a premium Ni-MH replacement pack designed for Dewalt 14.4V XRP cordless tools. Featuring upgraded high-capacity cells, built-in safety protections, and no memory effect, it ensures longer runtime and stable performance. Compatible with a wide range of Dewalt models, it offers a hassle-free fit and reliable power backed by a 1-year warranty and 30-day return policy.



| ASIN | B09LH5ZWF8 |
| Amperage | 3.7 Amps |
| Antenna Location | Power Tool |
| Battery Capacity | 3.7 Amp Hours |
| Battery Cell Composition | NiMH |
| Battery Cell Type | NiMH |
| Best Sellers Rank | #86,960 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #815 in Cordless Tool Battery Packs |
| Brand | FirstPower |
| Customer Reviews | 4.4 out of 5 stars 435 Reviews |
| Item Dimensions | 7.5 x 5.7 x 3.8 inches |
| Manufacturer | Shenzhen Lepower Electronic Co.,Ltd. |
| Model Number | DC9091 |
| Number of Batteries | 2 Product Specific batteries required. (included) |
| Recommended Uses For Product | Power Tool |
| Reusability | Rechargeable |
| Unit Count | 2 Count |
| Voltage | 14.4 Volts |
| Warranty Description | 1 Year |
D**G
Good replacement batteries for old DeWalt tools
I bought these after sending back Vanon 4.8Ah hour batteries that didn't fit the DeWalt charger well and one of the batteries gave the "bad battery signal." See my review for that product. These batteries are only 3.7Ah, but I'm very pleased with them. I did not have to force them into the DeWalt charger and pry them back out. I used them for a fairly big job, using 1 1/4" screws to re-attach drywall to a ceiling hung on 70 year-old very hard trusses. This required a lot of energy from the battery, particularly for the last 1/2" of each screw. There were probably something like 150 screws. I used one battery on the first day and the second battery the next day. Neither battery seemed to have lost enough charge to be noticeable. If you have old DeWalt 14.4 volt tools you want to continue using, I recommend these batteries. The price is very reasonable. I would say that DeWalt tools have come a long way over the years, and rather than get new 14.4 batteries, you might want to consider new tools, but for occasional jobs, these batteries will keep your old tools working.
G**N
A perfect fit to replace the original battery pack. They work right, period.
These worked perfect in my Dewalt drill. They fit right and even came charged. Very happy.
R**A
Works okay so far in limited use.
The batteries fit my power drill although it is a bit of a tight fit. So far the charge seems to be holding, which was the problem of my original batteries which failed to hold a charge.
J**N
Updated review
Weak, would not hold a charge very long. ( original review). After this review the company sent me other batteries ( which works perfectly) I did not ask for this as I waited too long (past the return policy) to check them out. My fault. Have to give this company 5 stars, great customer service and new batteries work great.
A**R
Great replacement
Perfect
J**A
Battery Brought New Life to Old Drill
I needed a new battery for an older DeWalt Drill. I was landed on First Power. The 14.4 V battery works well and fits the drill like a glove. The battery appears to hold the charge properly and works. Cant speak to how long it will last but so far so good.
L**Y
Drill battery report
Works ok. Doesn’t fit in box with drill set. Don’t know about battery like.
S**R
Compatible Worked Great
Worked great, and way cheaper than the Dewalt option. Totally compatible. It’s nice to have two!
Trustpilot
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