Microtek Heavy Duty Advanced Digital UPS Model 1550 (12V) DG for Better Performance. The Models in this Series have Bigger Transformer for Better Performance and which Charges the Battery on Low Voltage (Even low as 90V) also. It is designed using latest state-of-the art Technology. It also comes with Additional Features like Super-Fast Charging for Frequent Power cuts, More Backup for Long Power cuts, More Battery Life for Low Running Cost and More Load for Longer Duration.