WA1820 Battery Adapter – Worx 20V Li-Ion to 18V NiMH Converter
WA1820 Battery Adapter – Worx 20V Li-Ion to 18V NiMH Converter
WA1820 Battery Adapter – Use Your Worx 20V Lithium Battery on 18V NiMH Cordless Tools
Stop letting tool incompatibility slow down your projects. The WA1820 Battery Adapter Converter is the smart, practical solution that lets you power your older Worx 18V NiMH/NiCad cordless tools using your modern Worx 20V lithium-ion batteries. No modifications, no rewiring — just snap it in and get to work.
Made in Mainland China.
Why You'll Love This Adapter
- Extend Your Tool's Life: Keep using your trusted Worx 18V cordless tools by upgrading them to run on longer-lasting 20V Li-Ion batteries — maximizing your investment.
- Broad Battery Compatibility: Works with Worx 20V lithium batteries including WA3520, WA3525, WA3575, WA3578, WA3511, WA3512, WG153, WA3512.1, WA3522, WA3523, WA3544, WA3671, WG151s, WG251s, WG255s, WG540s, WG545s, WG890, WG891, and more.
- Wide Tool Compatibility: Compatible with Worx 18V cordless power tool models WA3127, WA3152, WG150, WG150s, WG152, WG250, WG541, WG900, WG901, and WG901.1 — and all other Worx 18V NiMH/NiCad tools.
- Durable, Compact Construction: Built with high-quality ABS + PC materials for lasting strength and a professional, compact form factor. Easy to install and comfortable to carry. Dimensions: approx. 130 × 86 × 93 mm (5.12 × 3.39 × 3.66 inches).
- CE Certified: Tested and certified to CE standards for reliable, safe operation.
- PCB Included: Features a built-in PCB for stable, secure power transfer between the battery and your tool.
- No Charging Required: The adapter itself does not need to be charged — simply use it to connect your existing battery to your tools.
Important Usage Notes
- Do NOT charge the battery while the adapter is attached. Always remove the adapter before placing the battery on a charger. Use only the original brand battery charger.
- The maximum initial voltage (without workload) is 20V; nominal voltage is 18V.
- Remove the adapter from the battery when not in use to ensure safety and longevity.
- This adapter is NOT compatible with Worx 20V tools — it is designed only for Worx 18V NiMH/NiCad tools.
- Battery and tools are NOT included — the package contains 1 × WA1820 adapter only.
Specifications
| Model Number | WA1820 |
| Material | ABS + PC |
| Certification | CE |
| Voltage Range | Low voltage (below 75V DC / below 50V AC) |
| Dimensions | ~130 × 86 × 93 mm / 5.12 × 3.39 × 3.66 in |
| PCB Included | Yes |
| Battery/Charger Included | No |
| Country of Origin | Mainland China |
Package Contents
- 1 × WA1820 Battery Adapter (battery and tools NOT included)
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Frequently Asked Questions
Q: Which Worx 20V lithium batteries are compatible with the WA1820 adapter?
A: The WA1820 battery adapter is compatible with a wide range of Worx 20V lithium-ion batteries, including WA3520, WA3525, WA3575, WA3578, WA3511, WA3512, WG153, WA3512.1, WA3522, WA3523, WA3544, WA3671, WG151s, WG251s, WG255s, WG540s, WG545s, WG890, and WG891, among others.
Q: Can I use the WA1820 adapter to charge my battery?
A: No — the WA1820 adapter cannot be used for charging. You must always remove the adapter from the battery before placing the battery in its charger. Use only the original Worx brand charger for safe charging.
Q: Will this adapter work with Worx 20V tools?
A: No. The WA1820 adapter is specifically designed to allow Worx 20V lithium-ion batteries to power Worx 18V NiMH/NiCad cordless tools only. It is NOT compatible with Worx 20V tools.
Q: Is the adapter durable enough for regular workshop use?
A: Yes. The adapter is constructed from high-quality ABS and PC materials, making it strong, durable, and capable of withstanding regular use in workshop or job-site environments. Its compact design also makes it easy to store and transport.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.