







🔋 Power up your Bosch tools with confidence and speed!
The Wowrmaykay 18V 4.0Ah Lithium-Ion Replacement Battery is a high-capacity, fast-charging power source designed for Bosch 18V cordless tools. Featuring durable ABS+PC construction, over 500 charge cycles without capacity loss, and a convenient LED power indicator, it ensures reliable performance and seamless compatibility with Bosch chargers and tools. Backed by multiple safety certifications and a 12-month warranty, this battery is engineered to keep professionals working efficiently and worry-free.







| ASIN | B0CKR3LV91 |
| Amperage | 4 Amps |
| Antenna Location | Power Tool |
| Battery Capacity | 4000 Amp Hours |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 580 Grams |
| Battery capacity | 4000 Amp Hours |
| Battery cell composition | Lithium Ion |
| Best Sellers Rank | 39,319 in DIY & Tools ( See Top 100 in DIY & Tools ) 183 in Cordless Tool Battery Packs |
| Brand | wowrmaykay |
| Brand Name | wowrmaykay |
| Country of Origin | China |
| Customer Reviews | 4.4 out of 5 stars 439 Reviews |
| Item Dimensions | 11.5 x 7.4 x 6.2 centimetres |
| Item Weight | 1.35 Pounds |
| Manufacturer | wowrmaykay |
| Model Number | HY-BOS-18B-L40 |
| Number of Batteries | 1 D batteries required. (included) |
| Number of batteries | 1 D batteries required. (included) |
| Product Warranty | 30 days money back and 12 months warranty |
| Recommended uses for product | Power Tool |
| UPC | 762715214447 762715403414 |
| Unit Count | 1.0 count |
| Unit count | 1.0 count |
| Voltage | 18 Volts |
M**T
Great Bosch professional 18V tool replacement battery
I have just started using this product at a very busy time and the battery has coped seemlessly. Perfect fit (Bosch Professional GSB 18V-65). As it is new, I cant yet comment on battery life but so far seems good.
G**E
Battery
Perfect works as it should
M**Y
Good fit
Look is not as expected, but is compatible with my Bosch tools and charger. Capacity good
M**E
Good so far
Good so far
M**S
Great value
I have non-OEM batteries for a couple of other cordless drills, but never had one for my Bosch driver, and when I spotted this on Vine, I ordered it immediately. The battery is a solid thing, tough and weighty. It charged perfectly on my OEM Bosch charger, and works perfectly. Being 5.0Ah, it has a lot more capacity than my old original batteries. No difference notable in performance. As ever with these non-OEM batteries, the saving is considerable, and at this price, I'll be ordering another, as my originals are now around 5 yrs old, and showing signs of losing charge capacity. These are a no brainer IMO. Easy 5/5
J**D
2/3 the price of the bosch original and works well
As shown this goes into the Bosch 18v tools perfectly and it's cheaper than the Bosch option.
A**Y
Great value for money
I have recently converted over to the Bosch professional range of battery 18v tools and although I have a couple of the Bosch batteries that came with a few of the tools I also have a couple of tools that didnt come with batteries so I decided to try these after market batteries. especially as a single 18v 5aH Bosch battery is around £75 and these after market ones are under £40 each I though I should try these. I have to say I am very very impressed with the quality of these batteries. they charge and operate in a very similar way. they last about the same time when being used and stay cool when charged so no issues whatsoever. I think these are excellent Dana great saving compared to the branded version.
D**Y
Good fit
Very robust and perfect fit to Bosch professional drill. Really pleased with purchase which arrived on time and well packaged.
Trustpilot
2 months ago
1 month ago