AC840040 is a documented battery in the 18V Power Tools system. This page identifies its sourced specifications, exact-model restrictions and the next check before use.
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Verified model facts
| Field | Manufacturer-sourced value |
|---|---|
| Manufacturer | RIDGID |
| Exact model | AC840040 |
| Product type | battery |
| System | 18V Power Tools |
| Market | US |
| Voltage label | 18V |
| Capacity | 4Ah |
| Chemistry | lithium-ion |
| Technology | MAX Output |
- Alternate identifier is the underlying component model explicitly named in the manufacturer Includes/description text, not a separate battery or tool record.
- The manufacturer lists 4Ah capacity for this exact pack.
Amazon model search
Search Amazon listings for the exact printed model. A search result can include other sellers, variants or unrelated items; check the manufacturer model, battery system, safety notices and seller listing before ordering.
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Search RIDGID AC840040 battery pack on AmazonWhat compatibility data says
The exact model is documented, but no direct pair statement is loaded. A platform rule may provide a conditional lead; absent evidence stays unknown.
Exceptions, source limits and safety
- Check the exact region, revision and current manufacturer instructions.
A missing rating is not zero or universal support. Charger AC input and pack-to-tool use are separate checks.
Official sources
These source records were reviewed as of 2026-10-30; access methods differ. Open the latest manufacturer manual for your exact type, region and revision before use.
- RIDGID — RIDGID AC840040: 18V 4.0 Ah MAX Output Lithium-Ion BatteryThe official US page identifies AC840040 as 18V 4.0 Ah MAX Output Lithium-Ion Battery. · full_page · Checked 2026-10-30