Tool Battery PricesBest value
DeWalt 20V MAX · 5Ah ×2 · $10.13/Ah
18V tool battery prices, ranked by price per amp-hour.
Compare official DeWalt 20V MAX, Milwaukee M18, Makita 18V LXT, Ryobi 18V ONE+, and Craftsman V20 batteries. Filter by platform or output, or click a column header to sort. Kits that include a charger or a tool are left out, so you can compare batteries on their own.
Prices last checked on November 10, 2026, on Amazon.com in the United States. Tax and shipping are not included, and prices can change. The amount Amazon shows at checkout is the one you pay. A “From” price means more than one official option starts at that amount.
Mid-range
Milwaukee M18 · 5Ah · $13.40/Ah
High output
DeWalt 20V MAX · 8Ah ×2 · $14.68/Ah
| Battery | Capacity | Platform | Output | Condition | Price | $/Ah | $/Wh | Buy |
|---|---|---|---|---|---|---|---|---|
 DCB205-2 | 5Ah ×2 | DeWalt 20V MAX | Standard | New | $101.27 | $10.13 | $0.56* | Amazon |
| DCB205-2c | 5Ah ×2 | DeWalt 20V MAX | Standard | New | $115.99 | $11.60 | $0.64* | Amazon |
 48-11-1852 | 5Ah ×2 | Milwaukee M18 | Standard | New | $118.00 | $11.80 | $0.66* | Amazon |
 CMCB204 | 4Ah | Craftsman V20 | Standard | New | From $48.99 | $12.25 | $0.68* | Amazon |
| CMCB204-2 | 4Ah ×2 | Craftsman V20 | Standard | New | From $99.00 | $12.38 | $0.69* | Amazon |
| 48-11-1850 | 5Ah | Milwaukee M18 | Standard | New | $67.00 | $13.40 | $0.74* | Amazon |
| 48-11-1850R | 5Ah ×2 | Milwaukee M18 | Standard | New | $134.99 | $13.50 | $0.75* | Amazon |
| DCB205 | 5Ah | DeWalt 20V MAX | Standard | New | $67.82 | $13.56 | $0.75* | Amazon |
| DCB204-2 | 4Ah ×2 | DeWalt 20V MAX | Standard | New | $109.99 | $13.75 | $0.76* | Amazon |
| 48-11-1840 | 4Ah | Milwaukee M18 | Standard | New | $55.00 | $13.75 | $0.76* | Amazon |
 PBP2005 | 4Ah ×2 | Ryobi 18V ONE+ | Standard | New | $110.00 | $13.75 | $0.76* | Amazon |
| DCB204 | 4Ah | DeWalt 20V MAX | Standard | New | $56.88 | $14.22 | $0.79* | Amazon |
| DCB2108-2 | 8Ah ×2 | DeWalt 20V MAX | High Output | New | $234.82 | $14.68 | $0.82* | Amazon |
| 4.0Ah ×2 | 4Ah ×2 | Ryobi 18V ONE+ | Standard | New | $118.12 | $14.77 | $0.82* | Amazon |
| 48-11-1850 | 5Ah | Milwaukee M18 | Standard | New | $74.97 | $14.99 | $0.83* | Amazon |
| HO XC6.0 ×2 | 6Ah ×2 | Milwaukee M18 | High Output | New | $184.00 | $15.33 | $0.85* | Amazon |
| XC5.0 Resistant | 5Ah | Milwaukee M18 | Standard | New | $76.99 | $15.40 | $0.86* | Amazon |
| DCB2108 | 8Ah | DeWalt 20V MAX | High Output | New | $123.65 | $15.46 | $0.86* | Amazon |
| CMCB209 | 9Ah | Craftsman V20 | Standard | New | $139.99 | $15.55 | $0.86* | Amazon |
| 6.0Ah ×2 | 6Ah ×2 | Ryobi 18V ONE+ | Standard | New | $193.26 | $16.11 | $0.89* | Amazon |
| P108 | 4Ah | Ryobi 18V ONE+ | Standard | New | $65.00 | $16.25 | $0.90* | Amazon |
| PBP004 | 4Ah | Ryobi 18V ONE+ | Standard | New | $65.98 | $16.50 | $0.92* | Amazon |
| Forge XC8.0 | 8Ah | Milwaukee M18 | High Output | New | $138.00 | $17.25 | $0.96* | Amazon |
| 2.0Ah Compact ×2 | 2Ah ×2 | Ryobi 18V ONE+ | Standard | New | $69.80 | $17.45 | $0.97* | Amazon |
| Forge HD12.0 | 12Ah | Milwaukee M18 | High Output | New | $209.99 | $17.50 | $0.97* | Amazon |
| P193 | 6Ah | Ryobi 18V ONE+ | Standard | New | $105.99 | $17.66 | $0.98* | Amazon |
| RB1840X | 4Ah | Ryobi 18V ONE+ | Standard | New | $71.69 | $17.92 | $1.00* | Amazon |
| 48-11-1820 | 2Ah | Milwaukee M18 | Standard | New | $35.89 | $17.95 | $1.00* | Amazon |
 BL1850 | 5Ah | Makita 18V LXT | Standard | New | $89.80 | $17.96 | $1.00* | Amazon |
| P108 | 4Ah | Ryobi 18V ONE+ | Standard | New | $72.99 | $18.25 | $1.01* | Amazon |
| DCB203-2 | 2Ah ×2 | DeWalt 20V MAX | Standard | New | $73.88 | $18.47 | $1.03* | Amazon |
| BL1850B-2 | 5Ah ×2 | Makita 18V LXT | Standard | New | $185.99 | $18.60 | $1.03* | Amazon |
| BL1850-2 | 5Ah ×2 | Makita 18V LXT | Standard | New | $186.00 | $18.60 | $1.03* | Amazon |
| DCB201 | 1.5Ah | DeWalt 20V MAX | Standard | New | $28.00 | $18.67 | $1.04* | Amazon |
| P161 | 2Ah ×2 | Ryobi 18V ONE+ | Standard | New | $75.00 | $18.75 | $1.04* | Amazon |
| DCB230-2 | 3Ah ×2 | DeWalt 20V MAX | Standard | New | $113.67 | $18.95 | $1.05* | Amazon |
| P145 | 4Ah ×2 | Ryobi 18V ONE+ | Standard | New | $154.99 | $19.37 | $1.08* | Amazon |
| BL1850B | 5Ah | Makita 18V LXT | Standard | New | $97.49 | $19.50 | $1.08* | Amazon |
| CMCB202-2 | 2Ah ×2 | Craftsman V20 | Standard | New | $79.00 | $19.75 | $1.10* | Amazon |
| BL1840B | 4Ah | Makita 18V LXT | Standard | New | $79.99 | $20.00 | $1.11* | Amazon |
| PBP003 | 2Ah | Ryobi 18V ONE+ | Standard | New | $41.99 | $21.00 | $1.17* | Amazon |
| PBP005 | 4Ah | Ryobi 18V ONE+ | Standard | New | $84.13 | $21.03 | $1.17* | Amazon |
| CMCB202 | 2Ah | Craftsman V20 | Standard | New | $43.00 | $21.50 | $1.19* | Amazon |
| BL1830B | 3Ah | Makita 18V LXT | Standard | New | $65.00 | $21.67 | $1.20* | Amazon |
| BL1840B-2 | 4Ah ×2 | Makita 18V LXT | Standard | New | $174.97 | $21.87 | $1.22* | Amazon |
| PBP006 | 2Ah | Ryobi 18V ONE+ | Standard | New | $44.98 | $22.49 | $1.25* | Amazon |
| P191 | 3Ah | Ryobi 18V ONE+ | Standard | New | $68.00 | $22.67 | $1.26* | Amazon |
| 6.0Ah 2-pack | 6Ah ×2 | DeWalt 20V MAX | Standard | New | $279.00 | $23.25 | $1.29* | Amazon |
| P107 | 1.5Ah ×2 | Ryobi 18V ONE+ | Standard | New | $70.00 | $23.33 | $1.30* | Amazon |
| BL1820B-2 | 2Ah ×2 | Makita 18V LXT | Standard | New | $95.00 | $23.75 | $1.32* | Amazon |
| BL1820B | 2Ah | Makita 18V LXT | Standard | New | $47.93 | $23.96 | $1.33* | Amazon |
| BL1830 | 3Ah | Makita 18V LXT | Standard | New | $73.53 | $24.51 | $1.36* | Amazon |
| BL1830B-2 | 3Ah ×2 | Makita 18V LXT | Standard | New | $148.00 | $24.67 | $1.37* | Amazon |
| P102 | 1.3Ah | Ryobi 18V ONE+ | Standard | New | $32.98 | $25.37 | $1.41* | Amazon |
| P107 | 1.5Ah | Ryobi 18V ONE+ | Standard | New | $43.99 | $29.33 | $1.63* | Amazon |
| Forge XC6.0 | 6Ah | Milwaukee M18 | High Output | New | $185.00 | $30.83 | $1.71* | Amazon |
| DCBP520-2 | 5Ah ×2 | DeWalt 20V MAX | Powerstack | New | $323.96 | $32.40 | $1.80* | Amazon |
| BL1815N | 1.5Ah | Makita 18V LXT | Standard | New | $59.00 | $39.33 | $2.19* | Amazon |
| BL1815N | 1.5Ah | Makita 18V LXT | Standard | New | $63.20 | $42.13 | $2.34* | Amazon |