Supported battery types:
-B1=lead-acid battery 12V/24V (automatic recognition)
-B2=lithium-ion battery (lithium battery) 3 series 3.7V=11.1V
-B3=lithium iron phosphate battery 4 series 3.2V=12.8V

Features:
1. Built-in industrial micro-controller, full 3-stage PWM charging management
2. Large LCD display, clear picture quality, all parameters can be adjusted
3. Built-in short-circuit protection, open-circuit protection, reverse protection, overload protection
4. Dual USB 5V output, current up to 2.5A, dual mosfet reverse current protection, low heat generation
5. Real-time temperature and humidity, intimate alarm settings, easy to use, suitable for most scenarios
6. It can be charged with three kinds of batteries: lead-acid batteries (12V/24V battery automatic identification), lithium-ion batteries, lithium iron phosphate batteries
7. Controller default is B2 charging lithium-ion batteries (lithium batteries) mode; using lead-acid battery controller battery type please set B1; lithium iron phosphate batteries set to B3
8. Weight: about 165g
9. Size: about 13.35 x 7 x 3.5cm