# BETENST 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.

- [Original product page](https://bargainpostbox.co.uk/product/betenst-mr9903-cordless-impact-wrench)
- [View offer](https://bargainpostbox.co.uk/visit/betenst-mr9903-cordless-impact-wrench)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: BETENST
- Model: MR9903
- Category: Tools & Garden > Power Tools > Drills & Drivers
- Price: 56.96 GBP
- Previous price: 79.99 GBP
- Discount: 29%
- Price checked: 2026-11-13T05:52:53.211Z
- Rating: 4.5 / 5
- Reviews: 78

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## 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.

## 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.

## Specifications

### Identity
- Brand: BETENST
- Model: MR9903
- Colour: Blue
### Drive and performance
- 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 and charging
- Battery capacity: 4.0Ah
- Battery type: Li ion
- Charger rating: 1.0Ah
- Claimed charging time: 1.5-2 hours

## Before you buy

- 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.

## In the box

- Battery pack (Included)
- 4.0Ah Li ion battery (Check selected pack): Named in the feature list. The explicit included-components field lists a battery pack.
- Fast charger (Check selected pack): Named in the feature list.
- Impact sockets, 17mm, 18mm, 19mm, 20mm and 21mm (Check selected pack): Five sockets named in the feature list.
- Storage tool box (Check selected pack): Named in the feature list.

## 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 feedback

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](https://bargainpostbox.co.uk/visit/xiazir-1-cordless-impact-wrench-1200nm)
- [Marketo Cordless Impact Wrench - 2 \* 4Ah Battery 800Nm Torque Very Powerful, Professional Tool Suitable for Various scenarios Power Through Any Task with Ease](https://bargainpostbox.co.uk/visit/betenst-mr9903-cordless-impact-wrench)
- [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](https://bargainpostbox.co.uk/visit/betenst-mr9903-cordless-impact-wrench)
- [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](https://bargainpostbox.co.uk/visit/betenst-mr9903-cordless-impact-wrench)
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- [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](https://bargainpostbox.co.uk/visit/betenst-mr9903-cordless-impact-wrench)
- [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](https://bargainpostbox.co.uk/visit/betenst-mr9903-cordless-impact-wrench)
- [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](https://bargainpostbox.co.uk/visit/betenst-mr9903-cordless-impact-wrench)
- [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](https://bargainpostbox.co.uk/visit/betenst-mr9903-cordless-impact-wrench)
- [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](https://bargainpostbox.co.uk/visit/betenst-mr9903-cordless-impact-wrench)
- [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](https://bargainpostbox.co.uk/visit/betenst-mr9903-cordless-impact-wrench)
- [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](https://bargainpostbox.co.uk/visit/betenst-mr9903-cordless-impact-wrench)

## Images

![BETENST MR9903 Cordless Impact Wrench, 1/2-Inch, 21V — 1](https://bargainpostbox.co.uk/i/LbNjV1x9Pnx7w0PnnIjV0Qs7C28ETyGiMGlrCn_BBUgYlWjjvwkJs0lUYTUQZJZpVS48Qt6ysPGejLMZWIb93HZHG1eLl6-7pYUwWa8ma-hQqY_Wjm6xMFlq.jpg)

![BETENST MR9903 Cordless Impact Wrench, 1/2-Inch, 21V — 2](https://bargainpostbox.co.uk/i/s49gEdfK4BJjPivB7q8Q9PE9bxZzzzdx2GI8Yx8biZCZPIU34o-pYP-uGt3ebxQDzGoSKtn9_rnTYUR18WC7maXbIp3MSIn008LhxUAbAP6fIe-bu4OY3MC6.jpg)

![BETENST MR9903 Cordless Impact Wrench, 1/2-Inch, 21V — 3](https://bargainpostbox.co.uk/i/lvbv0Dz9ignCdy69XXnmFbSMWOxFxcbww8vPFNrmT27qKuMfcFPbXv0c7NawA500Z_5K88IIcgtNoSdphqfIVDTrRgWAlHf0O8Uh9taTLw371S287Cp0QxKX.jpg)

![BETENST MR9903 Cordless Impact Wrench, 1/2-Inch, 21V — 4](https://bargainpostbox.co.uk/i/lmdJDuTwd4gj7Vat5w93ejYMo8Ij3wYO0zTEhA7rceE4UdUe3HowwBy9640TugqINv05T2BkpqeKz866KjydC6-VnnTBdlKDRTcEMgTOZr6a8pQYttnkqtXr.jpg)

![BETENST MR9903 Cordless Impact Wrench, 1/2-Inch, 21V — 5](https://bargainpostbox.co.uk/i/s5db7XfmOFnzRh5caW-qAoeq_OzXpmavbibr1ZScJ6aTwRvEaXaQuci4N6MkoNDt6rxiM2l79g7bLfN44Y9MsJMcojWXH_qyWQq22SWPnigYjaqBFvpLZy1C.jpg)

![BETENST MR9903 Cordless Impact Wrench, 1/2-Inch, 21V — 6](https://bargainpostbox.co.uk/i/CjATj9iazyxM4M7SRatekEUEoeHiudxIAvHrf_daVMzipFwWOIknswnX18yTOhor7A7qXser4IP--bRXELC4hkuIKDy2dLK8meOgD3FRxrQm64oo-bN5SlZA.jpg)

![BETENST MR9903 Cordless Impact Wrench, 1/2-Inch, 21V — 7](https://bargainpostbox.co.uk/i/52IUR_0oCzuXnVBpvk3OuAv8LqFhoXM0KUdZqngeEH5gT5COIbcKOGYV8m8RzK8Bpoedk6ScaNhRNGDX4ukCnfkuBnfiKez0h4Boom8BucXzl1klfJdxNYPa.jpg)