TOPCHANCES Upgrade High Capacity 3.6V 5300mAh Replacement Li-ion Battery Compatible with iRobot Braava Jet 240 Floor Mopping Robots (2 Pack) &#12304Compatible Models&#12305 New 3.7V 5300mAh Li-Ion Replacement Battery for iRobot Braava Jet 240 241 244 battery floor mopping Robots . Model NO.4446040 &#12304Premium Quaility &#12305 Made of high quality ABS and fireproof material, it is durable and safety. &#12304 5300mAh Capacity&#12305 3.7V 5300mAh ,high capacity battery can work for 100-150min approximately after full charge.Can be charged or discharged as needed without loss of capacity . &#12304 Bigger than Orginal ,But Compatibles Well &#12305 This replacement lithium ion battery is little bigger than orginal battery ,but it compatible with the Braava jet 240 very good, with an additional battery can keep your mopping Robots cleaning a second room without waiting for recharging. &#12304Warm Reminder&#12305 1.Please recharge it after long storage . 2.As Ni-Cd/Ni-MH and Li-ion batteries will self-discharge during storage.3.If you are not going to use the battery for a month or longer, store it in a clean, dry, cool place away from fire and water.4.Do not Separation, extrusion, and impact.