20 volt battery

Listings show several capacities: 2,000 mAh (2.0 Ah), 4,000 mAh (4.0 Ah), and a much larger 20,000 mAh option.

Dimensions vary across listings: heights from about 1.6 in to 4 in, widths from about 1 in to 3.4 in, and depths roughly 4.5 in to 6 in. Weights range approximately 0.86 lb to 2.0 lb.

Yes — at least one listing includes USB connectivity with dual charging ports (USB‑A plus two‑way USB‑C) and specifies a 45W power output for charging external devices.

Most listings show a 3 Year Limited Warranty; at least one listing indicates a 1 Year Limited Warranty.

Charge times vary: many listings cite a standard full charge of about 5 hours, while some mention optional fast/quick chargers that can reduce charging to around 1 hour. Charger availability also varies—some packages include a charger and user guide, others state the charger is not included, and several list compatible charger models.

Listings show both single batteries and multi‑packs; some items are sold as a package quantity of 1, while others are packaged as quantity 2.

A 4.0 Ah 20V battery is described as providing up to double the runtime of a 2.0 Ah battery. As a guideline from the listings, a 2.0 Ah battery is typically enough to power a string trimmer through an average 1/4‑acre lawn.

Listings generally present 20V batteries as part of a shared tool platform that powers 20V tools; some descriptions also reference 18V tools. A few entries mention pairing or combining batteries to support higher‑voltage tools — for example, combining two 20V batteries to run a 40V tool is noted in certain listings.