TechCar 21V 4.0Ah BatterySwap packs. Keep going.
The same 21V 4.0Ah lithium pack that powers the TechCar WashPro. Keep one charged on the shelf and the wash never waits on the charger.
- 21V max, 4.0Ah lithium-ion
- Slide-on pack, fits the WashPro
- Charges on the WashPro charger
Will it fit my tool?+
It fits the TechCar WashPro. For any other tool, email us the tool's model number before ordering — voltage alone does not guarantee a fit.
How long does a charge last?+
On the WashPro, about 30 minutes of spray per charge.
Free shipping+
Every order ships free with tracking. Processed in 1–2 business days, delivered in 5–8 business days.
30-day money-back guarantee+
Use it on your own car. Not for you? Email us within 30 days of delivery for a full refund.
Made for the WashPro
Slide it into the handle of your WashPro and get back to washing.
TechCar WashPro — Cordless Pressure Washer$139.99
Questions, answered
Still wondering about something? Email service@techcarauto.com and a real person will reply.
How do I charge it?
Use the charger that came with your WashPro.
How should I store it?
Indoors, away from heat, ideally part-charged if you will not use it for a while.
When will it arrive?
Orders are processed in 1–2 business days and delivered in 5–8 business days, with tracking.