No. On DEWALT’s 20V MAX products, 20V is the maximum initial voltage and 18V is nominal. That labeling relationship is not a universal connector or compatibility standard.
Voltage labels describe measurement
DEWALT explains the maximum and nominal values on its product information. Two products can share an electrical voltage label yet have different mechanical keys, electronics, protections and manufacturer approvals.
Use a specific compatibility table
For DCD805, DEWALT’s instruction manual lists DCB205 among the compatible packs. That pair is supported because of the manual, not because both labels can be read as 18V.
Keep other brands separate
Makita LXT, Milwaukee M18 and Bosch Professional 18V are independent systems. Never use the nominal-voltage relationship to turn a cross-brand combination into a positive result.
Next step
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.
- DEWALT USA — DCB205 product pageDCB205 20V MAX 5Ah and system scope · curated_primary · Checked 2026-10-30
- DEWALT USA — DCD800/DCD805 instruction manual compatibility tableDCD805 compatible battery packs including DCB205 and chargers including DCB118 · curated_primary · Checked 2026-10-30
- US Consumer Product Safety Commission — Batteries safety topicBattery, product and charger should be evaluated as a system · curated_primary · Checked 2026-10-30