1 / 7BETENST MR9903 Cordless Impact Wrench, 1/2-Inch, 21V
The BETENST MR9903 is a cordless impact wrench with a 1/2-inch square drive, a claimed 1000 Newton Meters of torque and three speed settings. Its listed kit includes a 4.0Ah battery, charger and five sockets, making it aimed at automotive and general fastening jobs where cordless operation is useful.
At a glance
- Brushless motor is listed with a claimed maximum torque of 1000 Newton Meters and maximum speed of 3100RPM.
- Three speed settings are specified, with trigger pressure also described as affecting speed.
- Battery has a power indicator, and the wrench has a built-in LED light that stays on for about five seconds after trigger release.
- The feature list names one 4.0Ah battery, a charger, five sockets and a storage tool box.
Reference price: £79.99
Price checked: 13 Nov 2026
View offerAhead of Black FridayExplore the selectionPros and cons
Pros
- Three speed settings give buyers options for different fastening and loosening tasks.
- A battery indicator and built-in work light are useful for monitoring charge and working in dim areas.
- The stated kit combines a battery and charger with five impact sockets, reducing the need to source those items separately.
Technical specifications
12 specifications| Brand | BETENST |
|---|---|
| Model | MR9903 |
| Colour | Blue |
| Drive style | Square Drive |
|---|---|
| Drive size | 0.5 Inches |
| Claimed torque | 1000 Newton Meters |
| Maximum speed | 3100RPM |
| Speed settings | 0-2100/0-2600/0-3100RPM |
| Battery capacity | 4.0Ah |
|---|---|
| Battery type | Li ion |
| Charger rating | 1.0Ah |
| Claimed charging time | 1.5-2 hours |
What to know before buying
Listing details to confirm
The listing describes the product as both an impact wrench and an impact driver. It gives 1000 Newton Meters in the title and details, while the feature text calls this a maximum figure. The title states 21V, but the feature text does not specify voltage. The five socket sizes and storage box appear in the feature list, while the explicit included-components field names only a battery pack. Confirm the selected listing's specifications and kit contents before purchase.
What’s in the box
- Battery packIncluded
- 4.0Ah Li ion batteryCheck selected pack
- Fast chargerCheck selected pack
- Impact sockets, 17mm, 18mm, 19mm, 20mm and 21mmCheck selected pack
- Storage tool boxCheck selected pack
Check which accessories are included in your selected pack before buying.
Who is it for?
A good fit for
- DIY users who want a cordless 1/2-inch-drive wrench with three speed settings for automotive or other fastening work.
- Buyers who want a listed battery, charger and common 17mm to 21mm impact sockets in the same kit.
Less suited to
- Buyers who need verified torque measurements, a confirmed 21V specification or a fully consistent package inventory before ordering.
Customer reviews on Amazon
- 5 stars
77% 77% - 4 stars
11% 11% - 3 stars
5% 5% - 2 stars
3% 3% - 1 star
4% 4%
Customer feedback describes the wrench as good quality and functional, including a report that it removed wheel nuts in less than 10 seconds. That may interest buyers handling wheel nuts, though the result is an individual reported experience rather than a guaranteed performance measure. The overall rating distribution is mostly five-star, with a smaller spread of lower ratings, so experiences are not uniformly positive.
Positive themes
- Customer feedback describes the product as good quality and functional.
Frequently asked questions
What drive size does the BETENST MR9903 use?
The listing specifies a Square Drive and gives a jaw capacity of 0.5 Inches. Its title describes the drive as 1/2 inch.
How many speed settings are listed?
The feature text gives three settings: 0-2100/0-2600/0-3100RPM. It also says trigger pressure affects speed.
What comes in the kit?
The feature list names one 4.0Ah Li ion battery, one fast charger, five impact sockets in sizes 17mm, 18mm, 19mm, 20mm and 21mm, and a storage tool box. The explicit included-components field names only a battery pack, so confirm the selected kit contents.
Alternative options
XIAZIR Cordless Impact Wrench 1200 Nm, 1/2 inch Impact Gun, 21V 4.0Ah×2 Batteries & Fast Charger, 3-Speed Control with LED Light, Includes 5 Sockets + Extension Bar + Carry Case
£79.99
Marketo Cordless Impact Wrench - 2 * 4Ah Battery 800Nm Torque Very Powerful, Professional Tool Suitable for Various scenarios Power Through Any Task with Ease
£49.99
DCA 20V Brushless Impact Wrench Cordless 910 Nm Max Torque for Car Lug Nut | 1/2" Hog Ring, 4 Modes, 1×4.0 Ah Battery, Smart Loosen, Compact Design, LED Light for Auto Repair& Caffolding, ADPB688
£89.99
SoarFly Impact Wrench 1/2 Inch, 1200 Nm Brushless Cordless Impact Gun | 21V 4Ah Batteries (2x), 5 Sockets, Fast Charger, Carry Case, For Cars, Vans, and Machinery
£95.99
Bryze 1000Nm Cordless Impact Wrench with – Brushless 1/2"" Electric Torque Wrench with Automatic Stop, Tungsten Steel Shaft – Heavy Duty for Car Truck Tyre Removal, Construction, Industrial
£28.99
FADAKWALT 20V Cordless Impact Wrench, Impact Gun with 1/2" Square Driver, High Torque 300 Ft-Lbs(400N.m) Power Impact Wrench, Electric Impact Gun Kit with 3.0Ah Li-Ion Battery and Fast Charger
£28.39
ONEVAN 1/2" Cordless Impact Wrench 1700N·m, Brushless, 3 Forward/2 Reverse | Reverse Auto-Stop Safer Bolt Removal, 6 Sockets, 2×4.5Ah Battery Up to 60 Min Runtime, for Truck, Car, Machinery Repair
£108.89
XIAZIR Cordless Impact Wrench 1200Nm, Impact Driver & Impact Drill 1/2" Brushless Power Tool with 2×4.0Ah Batteries, 5 Sockets, 8 Drill Bits, 5 Driver Bits, Extension Bar & Adapter for Car, Van & DIY
£84.99
blayram 1200Nm Cordless Impact Wrench Compatible with Makita 18V, 1/2 inch Impact Gun, 2x4.0Ah Batteries & Fast Charger, Variable Speeds Control with LED Light, Includes 5 Sockets for Car
£95.99
Einhell Professional Cordless Impact Wrench 450 Nm 18V PXC Without Battery | 3 Power Speeds, Brushless, External Square Drive, Bit Adapter, Socket Set 1/2" Socket Mounting Including Nut Set IMPAXXO
£114.98
PULITUO 20V Cordless Impact Wrench 1/2 Inch, Power Impact Gun Max Torque 350 Ft-lbs(475N.m), 3.0Ah Li-ion Battery, 1-Hour Fast Charger, Led Light, 4 Pcs Impact Sockets, Tool Bag
£29.59
Cordless Impact Wrench, 900Ft-lbs (1200N.m) 1/2" Brushless Impact Gun, 21V High Torque Power Impact Driver, 2x4.0Ah Batteries Electric Impact Motor Variable Speeds for Family Car/Pickup Truck/Mower
£79.98
