All the cobra 40v cordless garden machinery uses the same lithium ion battery and battery charger. The battery powered 40v range includes hand propelled and self propelled four wheel lawn mowers, rear roller lawn mowers and hand held garden tools including a line trimmer, hedge cutter and chainsaw.the cobra gt3240vz cordless line trimmer uses a 4ah 40v lithium battery not included which can power the trimmer for up to 80 minutes in ideal cutting conditions. The strimmer has a 28 – 32cm cutting path and uses 1.6mm trimming line. The trimmer head can be rotated to edge round borders or along paths and with the protection guard down you can trim around delicate plants without causing damage. The cobra gt3240vz has a comfortable loop handle and the operating controls have been positioned ergonomically.4ah 40v lithium ion battery and battery charger not included and available to purchase separatelyspecificationsmodel gt3240vztype cordlesscutting path 28 – 32cmtrimmer line 1.6mm twistedrunning time up to 80 minutescharging time approx 90 minutestelescopic shaft yeshandle type looprotating head yesno load speed 7500rpmweight incl a battery 2.9kgwarranty manufacturer’s 2 year battery and charger not included