This device is only workable on lead-acid battery but not Trojian type.LED battery indicator available in 48V volt DC acid battery

10 segment LED Bar Graph display,Resolution: 10% per segment 3 color LED display,different light displays different battery level visually;

LED flash for low charge&high charge warning

This battery indicator has a delay time to avoid wrong display about battery level:Once battery was fully charged, Meter will cycle through for continuous 6 minutes then stay “full” position.

With the key switch input model it’s use turns ON and OFF the LED display while still monitoring the battery state of charge.
Size:48V
Runleader RL-BI003 (Acid lead storage Battery) LED battery indicator battery fuel gauge battery charge gauge for DC powered equipment such as fork lifts, golf carts, floor care equipment, and any other battery powered equipment. This battery indicator is suit for 48V. We also have 36V,12/24V,72V. If have demands,please select from out store or leave message. This battery meter Delay Display Function,Open Circuit Reset Function This meter has 10 segment LED bar graph.3 color LED display:1Red,2Yellow,3Green,different light displays different battery level visually This battery meter suit for 12V or 24V lead acid storage battery. And voltage 12V and 24V will automatically identified according to battery s voltage. No need operation by user. When battery indicator connect with new battery,it will display full.After 155s,it will display the real battery level segment. Product Function: Battery Level Testing System: 10 segment LED Bar Graph display Unique Design: easy SNAP-IN installation, data stored automatically after diaconnecting with the battery Have got CE and ROHS certification Product Specification: Product Size:53x33x24(mm) Display Screen:10 Segment LED Bar Graph Operate Current:20mA Operate Temperature:-30 C- +85 C Pin Type:+,-,C Package:With Box N.W.:45g Waterproof Rate:IP65