🔋 21V 4A Charger for 18V / 20V MAX Li-Ion Tools, Mowers & Trimmers
POWATECHNIC™ – Trusted UK Seller Since 2004 🇬🇧
Important: Please provide your tool's Brand & Model at checkout to ensure compatibility and avoid delays.
✅ Product Specifications
- Output Voltage: 21V
- Output Current: 4.0A
- Input Voltage: 100–240V
- Battery Compatibility: 18V (also marketed as 20V MAX) Lithium-Ion / Li-Poly
- Charging Plug: 2-Pin Round Connector (12.6mm diameter)
- LED Indicator: Red = Charging, Green = Fully Charged, Flashing Red = Charging Error
- Certifications: CE / TUV / GS / CB / RoHS
- Dimensions: 165mm x 70mm x 40mm
- Model Ref: PWT2200-PAJ2
- Warranty: 12-Month
🔌 Compatibility & Plug Info
This charger is suitable for a wide range of 18V (also marketed as 20V MAX) Lithium-Ion power and garden tools that use a 2-pin, 12.6mm round connector. Ideal for:
- Robotic Lawn Mowers
- Hedge Trimmers & Strimmers
- Chainsaws & Leaf Blowers
- Drills, Impact Drivers & Other Power Tools
If you are unsure, please contact us with the brand/model of your tool and a photo of its charging port.
🛒 How to Choose the Right Charger
For quick advice, WhatsApp us photo images of your battery charging port and your tool's make & model.
Alternatively, use this guide:
- If you have your old charger: Match the OUTPUT Voltage (V) and check the OUTPUT Ampere (A) on the label.
- If you do not have a charger: Check your battery's Voltage (V) and Capacity (Ah or Wh) and refer to the table below.
| INPUT Voltage (Column A) |
OUTPUT Voltage (Column B) |
OUTPUT Ampere (Column C) |
Battery Capacity (Column D) |
|---|---|---|---|
| 100V-240V Mains | 12V - 12.8V | 4A | 10-30Ah (144-360Wh) |
| 24V-29.4V | 2A | 6-15Ah (144-360Wh) | |
| 5A | 15-30Ah (360-720Wh) | ||
| 36V-42V | 2A | 6-15Ah (216-540Wh) | |
| 3A | 6-16.5Ah (216-594Wh) | ||
| 5A | 15-30Ah (540-1080Wh) | ||
| 48V-54.6V | 2.5A | 6-16Ah (288-768Wh) | |
| 5A | 16-30Ah (768-1440Wh) | ||
| 12V In-Car Socket | 24V-29.4V | 2A | 6-15Ah (144-360Wh) |
| 36V-42V | 1.5A | 6-15Ah (216-540Wh) |
🚚 Shipping Information
- UK Mainland: Delivery usually within 2-3 working days.
- Highlands, NI, Islands: 3-5 working days.
- EU/US/AUS: Approximately 7 working days.
- Items dispatched within 48 hours on weekdays after payment.
- Click & Collect (Appointment Only): Sheffield, S9 2LQ.
- Mon–Fri: 8:30am - 6:00pm
- Saturday: 9:30am - 1:30pm
🔁 Return Policy
We accept returns within 14 days of receipt if the item is incorrect or unused and in its original packaging. Please notify us before returning. The buyer pays return postage unless the item is faulty. Please inspect all items for damage before signing with the courier, as claims for damage cannot be processed after signing.
🏢 About Us & Why Choose Us
Our chargers have genuine CE, TUV, and GS approval, ensuring they are safe and have passed rigorous quality checks. All our chargers come with a 12-month warranty and full technical support.
Powatechnic are UK-based specialists in 12V-60V battery chargers for lithium and lead-acid batteries, as well as folding lightweight electric wheelchairs. Based in Sheffield (1.5 miles from M1 J34), our parent company is Firstlink Auto Parts Ltd.