All-sun BT20 Digital Battery Tester – Compact & Reliable Power Checker
Precision-engineered ABS shell with anti-slip texture for durability and secure handling. Features a crisp LCD screen for instant voltage readings (1.5V–9V), supporting AAA, AA, C, D, and 9V batteries. Advanced microchip technology ensures ±0.05V accuracy, ideal for home gadgets, toys, remotes, and emergency kits. Pocket-sized (4.3×2.1×0.6 inches) with auto-off function to conserve battery life. Simplified one-button operation—no setup required. Trusted by professionals for quick diagnostics, ensuring optimal device performance. Bulk-order friendly for retailers and households alike.