You might also be interested in these ryobi rb18l50 18v one+ lithium+ 5.0 ah battery.
Ryobi - RC18120-140 - Pack of 1 120-minute Fast Charger + 1 Lithium Battery + 18 V ONE + 4.0 Ah - Battery Compatible with More Than 200 DIY and Gardening Tools
RYOBI
£ 74.99
free shipping
To the product (1 offer)
Ryobi RC18120-213 18V ONE+ Lithium 2 x 1.3Ah Battery and Charger, Hyper Green
RYOBI RC18150-150 Fast Charger & 5.0AH Battery Pack
RYOBI
£ 119.95
free shipping
To the product (6 offers)
Ryobi P192 18 Volt 4.0 Ah ONE+ Lithium-Ion LITHIUM+ HP High Capacity Compact Battery (Non-Retail Packaging)
Product will either come in original packaging that is in less than perfect shape and has been opened to inspect contents or will come in non-retail packaging (brown/white box or white/clear bag). Built-in 4-bar illuminated charge indicator to warn of diminishing charge
£ 143.82
free shipping
To the product (1 offer)
Ryobi - RC18150-250G Pack of 2 Batteries 18V One+ 5.0 Ah & Sound Fast Charger
Lithium+ high energy technology allows 3 times more autonomy for your tools