Choose a battery or tool you already own. We show every other brand’s tool or charger it works with, and how sure we are.
| Tool | Result | Confidence | Notes |
|---|---|---|---|
| Stanley Fatmax V20 18V | Fits | Official | Same brand and system. |
| DeWalt 18V XR | Only with modification | Reported | Same rails but different notches (DeWalt 5-slot, Black & Decker and Stanley 4-slot). Only fits with physical modification, which voids the warranty and is not recommended. |
| Black & Decker 18V lithium | Unknown | Disputed | Owners report the same 4-slot pattern, but cross-brand adapters are sold for this pair, which suggests the packs do not interchange. Do not force it. |
| Porter Cable 20V Max | Unknown | Inferred | Slot pattern not recorded. |
| Charger | Result | Confidence | Notes |
|---|---|---|---|
| Stanley Fatmax V20 18V | Fits | Official | Same brand and system. |
| Black & Decker 18V lithium | Unknown | Disputed | Owners report the same 4-slot pattern, but cross-brand adapters are sold for this pair, which suggests the packs do not interchange. Do not force it. |
| DeWalt 18V XR | Unknown | Reported | No reports of cross-brand charging. |
| Porter Cable 20V Max | Unknown | Inferred | Slot pattern not recorded. |
Part of the Stanley Black & Decker 18V battery system. 9 cross-brand adapter combinations are sold or reported by owners. See the adapter finder and its risks.
How sure are we? What the confidence levels mean
- Official
- The manufacturer says so, or it is the same brand and system.
- Verified
- Confirmed by us, or by several independent owners with photos.
- Reported
- One or two owners report it.
- Inferred
- Likely from the same maker or shape, but nobody has confirmed it.
- Disputed
- Owners disagree. Treat as unsafe until confirmed.