BP18Li4.0HPC vs BP18TBX4 vs BP18Li5.0
Same fit: these run the same tools
Lowest price we track at UK retailers, updated daily. We may earn a commission
They differ in 5 of 6 areas
Same tools, so this is about size, weight and cost. No overall winner: pick the size that suits the job.
EnergyThe BP18Li5.0 stores 25% more than the BP18Li4.0HPC: 90Wh vs 72Wh.
PriceThe BP18TBX4 is the cheapest of the three today, at £119.95.
Price per AhBP18TBX4 £29.99, BP18Li5.0 £34.59, BP18Li4.0HPC £38.99.
CellsBP18Li4.0HPC: 21700 cylindrical; BP18TBX4: 21700 tabless; BP18Li5.0: 18650 cylindrical.
ChemistryBP18Li4.0HPC: Li-ion; BP18TBX4: Li-ion (cylindrical); BP18Li5.0: Li-ion (cylindrical).
Good to know
Same toolsAll three fit every Festool 18V tool, and pair up on the Festool 18V Twin (36V) tools.
Weight0.6 to 0.7kg: too close to call.
Same chargers201136 and 577019 charge all three. Charge times are in the specs below.
Energy
BP18Li4.0HPC
72Wh
BP18TBX4
72Wh
BP18Li5.0
90Wh
Maker figure, or volts × Ah where they don't publish one. Ah and Wh explained ›
Weight
BP18Li4.0HPC
0.6kg
BP18TBX4
0.6kg
BP18Li5.0
0.7kg
Within 0.1kg: too close to call.
Price per Ah
BP18Li4.0HPC
£38.99
BP18TBX4
£29.99
BP18Li5.0
£34.59
Lowest price we track ÷ Ah. Full specs
BP18Li4.0HPCBP18TBX4BP18Li5.0
Voltage18V18V18V
Capacity4.0Ah4.0Ah5.0Ah
Energy72Wh72Wh90Wh
Weight0.6kg0.6kg0.7kg
Energy for its weight120Wh/kg (worked out)120Wh/kg (worked out)129Wh/kg (worked out)
ChemistryLi-ionLi-ion (cylindrical)Li-ion (cylindrical)
Cell type21700 cylindrical21700 tabless18650 cylindrical
Fuel gaugeYesYesYes
Size (L × W × H)Not listedNot listedNot listed
Charge time, 201136, 57701932 min32 min45 min
Lowest price£155.95£119.95£172.95
Specs from each maker's own documentation. "Not listed" means the maker doesn't publish it or we haven't found it yet; it never counts as a difference.
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