UPG 48140 BATTERY MAINTAINER 4000 12-VOLT 4A LFP AND SLA CHARGER
Custom-engineered for LiFePO4 (LFP), AGM, and Nano-Silica sealed lead-acid batteries, the Universal Battery Maintainer 4000 is designed to efficiently charge, maintain, and extend the life of your 12-volt batteries. It delivers optimized performance with built-in safety protections and reliable charging stages to keep your batteries in peak condition.
At UPG, we’re committed to providing the highest standards in quality, performance, and customer experience.
Specifications:
-
Charges and maintains LiFePO4 (LFP), AGM, and Nano-Silica sealed lead-acid batteries
-
Over-current protection
-
Short-circuit protection
-
Over-voltage protection
-
Input Voltage: 90Vac – 132Vac
-
Frequency: 47Hz – 63Hz
-
Max Input Current: 1.5A at 90Vac
-
Bulk Charging (Constant Current): 4A
-
Absorption Stage (Constant Voltage): 14.6V
-
Float Stage (Constant Voltage): 13.6V

Description
Custom-engineered for LiFePO4 (LFP), AGM, and Nano-Silica sealed lead-acid batteries, the Universal Battery Maintainer 4000 is designed to efficiently charge, maintain, and extend the life of your 12-volt batteries. It delivers optimized performance with built-in safety protections and reliable charging stages to keep your batteries in peak condition.
At UPG, we’re committed to providing the highest standards in quality, performance, and customer experience.
Specifications:
-
Charges and maintains LiFePO4 (LFP), AGM, and Nano-Silica sealed lead-acid batteries
-
Over-current protection
-
Short-circuit protection
-
Over-voltage protection
-
Input Voltage: 90Vac – 132Vac
-
Frequency: 47Hz – 63Hz
-
Max Input Current: 1.5A at 90Vac
-
Bulk Charging (Constant Current): 4A
-
Absorption Stage (Constant Voltage): 14.6V
-
Float Stage (Constant Voltage): 13.6V

















