Keep your Strion 2020 powered with this Streamlight Li-ion Battery Stick. This replacement battery has all the features you need to power your Strion 2020. From its 3.6V to 3450mAh capacity, this battery is made for high-drain use. The proprietary battery is built to fit the Strion 2020, with included internal protections to encourage optimal battery health. Recharge this battery up to 1,000 times, and get the most out of your Streamlight products!