Extech, the manufacturer, makes the BT100 battery tester as a reliable device for checking battery levels. It features a battery charge indicator to quickly assess the status of various batteries. Typically used in automotive and electrical applications, it helps ensure devices are powered efficiently. https://elecena.pl/product/28942490/extech-bt100-battery-capacity-tester-ac-milliohm-meter-for-quick-testing 2025-06-12 https://elecena.pl/product/28942490/extech-bt100-battery-capacity-tester-ac-milliohm-meter-for-quick-testing 2026-05-06 https://elecena.pl/product/28942490/extech-bt100-battery-capacity-tester-ac-milliohm-meter-for-quick-testing 2026-06-20 https://elecena.pl/product/28942490/extech-bt100-battery-capacity-tester-ac-milliohm-meter-for-quick-testing 2026-07-13