Best Power Tool Batteries October 2026
Compare the top power tool batteries to find the right balance of voltage, capacity, and system compatibility for your cordless kit. This independent guide highlights the key strengths and trade-offs of each option to help you make an informed choice.
Last updated: 6 October 2026
Batteries for Tools: Top 5
1
Makita BL1850B
from £24.8912 stores
from £24.89
12 stores
2
Milwaukee Redlithium-Ion M18 B5 18V 5.0Ah
from £21.926 stores
from £21.92
6 stores
3
Ryobi One+ RB18L50
from £78.855 stores
from £78.85
5 stores
4
Milwaukee M12 HB5 Batteri High-Output 12V 5.0ah
from £59.952 stores
from £59.95
2 stores
5
Makita LXT BL1860B
from £33.985 stores
from £33.98
5 stores
The Makita BL1850B is an 18V lithium-ion battery delivering 5.0 Ah of capacity for demanding tasks. Weighing just 0.63 kg, it features an integrated fuel gauge for monitoring charge levels on the job.
Pros
Built-in battery level indicator
Generous 5.0 Ah runtime
Lightweight build at 0.63 kg
Cons
Sits in a premium price tier
Only works with Makita 18V tools
The Milwaukee M18 B5 is a 5.0 Ah 18V battery pack designed to power the extensive M18 cordless lineup. It strikes a practical balance between extended runtime and manageable weight for daily jobsite use.
Pros
Onboard fuel gauge display
Generous 5.0 Ah runtime
Works across all Milwaukee M18 tools
Cons
Heavier than 18V rivals at 0.7 kg
Premium price positioning
The Ryobi One+ RB18L50 provides 5.0 Ah of capacity at 18V to run a wide selection of One+ home and garden tools. It delivers extended runtimes, making it a reliable workhorse for DIY projects.
Pros
Solid 5.0 Ah capacity for long projects
Fits all Ryobi 18V One+ tools
Cons
Heaviest 18V pack here at 0.8 kg
Bulkier design than competitors
The Milwaukee M12 HB5 is a High-Output 12V battery offering 5.0 Ah of capacity in a compact profile. It is engineered to give M12 tools longer runtimes and better power delivery during demanding jobs.
Pros
High 5.0 Ah capacity in a 12V form factor
High-Output cell configuration
Fits all Milwaukee M12 tools
Cons
Incompatible with 18V tool platforms
Lower total power delivery than 18V packs
The Makita LXT BL1860B offers an impressive 6.0 Ah capacity for prolonged use across Makita 18V cordless tools. It is built for high-drain applications where minimizing battery swaps is essential.
Pros
Large 6.0 Ah extended runtime
Compatible with Makita 18V LXT system
Highest capacity on this list
Cons
Higher cost than 5.0 Ah batteries
May add fatigue during overhead use
Compare specifications
| Battery voltage | 18 V | 18 V | 18 V | 12 V | 18 V |
|---|---|---|---|---|---|
| Battery type | Li-Ion | Li-Ion | Lithium | Li-Ion | Li-Ion |
| Battery capacity (Ah) | 5 Ah | 5 Ah | 5 Ah | 5 Ah | 6 Ah |
How we create the list
The ranking is updated monthly and is based on data we collect from our own platform. Products that rank highly are popular among our users while also maintaining high quality according to editorial expert assessments. Specifically, we weigh how many users follow the product via price alerts or lists, how it is rated by experts and users, as well as how much traffic it generates to stores and how well it is represented in retail. The texts on this page are AI-generated and created to give you a quick and clear overview. No products are paid placements – the ranking is driven solely by data.
