WORX WA3575 20V PowerShare 2.0 Ah Replacement BatteryYou can run your entire Worx Power Share collection of tools on this one 20V 2.0 Ah Max Lithium-Ion Battery. String trimmers and impact drivers, circular saws and lawnmowers, Hydroshots and leaf blowers, the list goes on and on. These batteries are lighter, which makes the tool lighter, and more efficient, than rechargeable batteries based on older designs. Max L-ion batteries don’t wane or drain, and won’t suffer from the memory effect that prevented last generation’s batteries from fully charging as they got older. Plus, they just last longer, so they’ll save you money. You can buy less of them because you can share each one between multiple tools. Cordless tools are much more cost-effective than gas, and you won’t have to worry about getting snagged on a cord. 40V Power Share tools run on this battery too, you just need two of them (20V + 20V = 40V). They provide gas-like power and performance without all the drawbacks of gasoline: no fumes, no mess, no paying at the pump. Depending on the task, and the tool, these batteries will have different runtimes, but a good rule of thumb is that one 20V 2.0 Ah battery will provide enough charge to power our Worx GT String Trimmer/Edger/Mini-Mower through an average ¼ acre lawn. This battery is compatible with the following chargers (not included): WA3742, WA3868 quick charger, WA3875 dual-port charger, WA3878 quick dual-port charger.WORX WA3875 20V Li-ion Dual Port 2 Hour ChargerPerfect for those with large lawns, or large tool collections. Charge two 20V Power Share batteries in about two hours, or just one in about an hour. The Worx 20V Power Share & 18V MaxLithium Dual-Port charger is the perfect base upon which to build an entire tool collection. You’ll always have the juice you need if you’ve always got a battery or two in the charger. And the long cord lets you place it anywhere that’s convenient in your shop. You can even mount it on the wall for a more permanent power station. You’ll keep your Power Share chainsaw, lawnmower, hedge trimmer, drill/driver, etc. always topped-up when you have twice the charger. Power Share frees you from gas-powered and electrical tools. You don’t have to buy gasoline just to mow the lawn anymore. And you can stop wrapping yourself around trees with a cord. Battery-powered tools are much quieter and smell much better than gas tools, and 40V Power Share tools offer performance that’s similar or better. It takes two 20V batteries to power Worx 40V tools, so what could be better than a charger that fills up two batteries at once? Compatible with the following Worx 18V or 20V batteries (not included): WA3512, WA3544, WA3512.1, WA3520, WA3522, WA3525, WA3671, WA3575, and WA3578.