in 7 offers
The lowest price for RYOBI RB1840X 18V One Plus Lithium Plus 4.0Ah Compact Battery right now is $75.05 at Cash Converters, compared across 4 retailers.
The all-time low was $15.00 on 20 Sept 2026 — today's price is 400% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 1 Nov 2026.
RYOBI RB1840X 18V One Plus Lithium Plus 4.0Ah Compact Battery
Last updated at 01/11/2026 10:34:06
Ryobi Rb1840x 4.0Ah 18V Cordless Tool Battery
Delivery $12.50
Ryobi RB1840X 18V 4.0Ah Compact Battery
Delivery between 5–9 Nov $41
Ryobi 18v One+ Hp 4.0ah Battery Rb1840x - 3 Year Replacement Warranty
Delivery $11
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Ryobi RB 18l40 18V Li-Ion Battery 4.0Ah Gift Box
Delivery between 7–10 Nov $29
| Power Source | Cordless |
| Power Voltage | 18V |
| Battery Voltage | 18 V |
| Battery Type | Lithium+, Lithium+ battery, Lithium+ battery technology |
| Battery Capacity | 4.0 Ah |
Ryobi Rb1840x 4.0Ah 18V Cordless Tool Battery
Delivery $12.50
Ryobi RB1840X 18V 4.0Ah Compact Battery
Delivery between 5–9 Nov $41
Ryobi 18v One+ Hp 4.0ah Battery Rb1840x - 3 Year Replacement Warranty
Delivery $11
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Ryobi RB 18l40 18V Li-Ion Battery 4.0Ah Gift Box
Delivery between 7–10 Nov $29
| Power Source | Cordless |
| Power Voltage | 18V |
| Battery Voltage | 18 V |
| Battery Type | Lithium+, Lithium+ battery, Lithium+ battery technology |
| Battery Capacity | 4.0 Ah |
