Specs from the makers' own documentation Battery compatibility built in UK retailer prices, updated daily 25+ years of trade experience
Battery comparison
3 of 3 batteries

4.0Ah vs 5.2Ah vs 6.0Ah

Same fit: these run the same tools
EINHELL POWER X-CHANGE 18V
Einhell 4511396 4511396 4.0Ah · 72Wh · 0.67kg
£36.95from 2 retailers View at Tooled Up ›
EINHELL POWER X-CHANGE 18V
Einhell 4511437 4511437 5.2Ah · 94Wh · 0.89kg
£49.95from 3 retailers View at Tooled Up ›
EINHELL POWER X-CHANGE 18V
Einhell 4511502 4511502 6.0Ah · 108Wh · 1.01kg
£74.95from 2 retailers View at Tooled Up ›

Lowest price we track at UK retailers, updated daily. We may earn a commission

They differ in 4 of 5 areas

Same tools, so this is about size, weight and cost. No overall winner: pick the size that suits the job.

EnergyThe 6.0Ah stores 50% more than the 4.0Ah: 108Wh vs 72Wh.
WeightThe 4.0Ah is the lightest at 0.67kg, the 6.0Ah the heaviest at 1.01kg.
PriceThe 4.0Ah is the cheapest of the three today, at £36.95.
Price per Ah4.0Ah £9.24, 5.2Ah £9.61, 6.0Ah £12.49.

Good to know

Same toolsAll three fit every Einhell Power X-Change 18V tool, and pair up on the Einhell Power X-Change 18V Twin (36V) tools.
Energy
4511396 72Wh
4511437 94Wh
4511502 108Wh
Maker figure, or volts × Ah where they don't publish one. Ah and Wh explained ›
Weight
4511396 0.67kg
4511437 0.89kg
4511502 1.01kg
Price per Ah
4511396 £9.24
4511437 £9.61
4511502 £12.49
Lowest price we track ÷ Ah.

Full specs

451139645114374511502
Voltage18V18V18V
Capacity4.0Ah5.2Ah6.0Ah
Energy72Wh94Wh108Wh
Weight0.67kg0.89kg1.01kg
Energy for its weight107Wh/kg (worked out)106Wh/kg (worked out)107Wh/kg (worked out)
ChemistryLi-ionLi-ionLi-ion
Cell type18650 cylindricalNot listed21700 cylindrical
Fuel gaugeYesYesYes
Size (L × W × H)Not listedNot listedNot listed
Lowest price£36.95£49.95£74.95

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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