Battery Tester / Charger

Part Number
Model Number
Lamar Technologies
Technical Description
True Blue Charger PRO, 28 VDC, LiFePO4 Battery Charger/Discharger/Tester
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Purchase Type
New Outright No core return required
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Product Description

Charge, discharge and evaluate lithium-ion aircraft batteries with the easy-to-use TT28-12 True Blue Charger PRO. The TT28-12 is the ONLY battery charger that automatically discharges lithium-ion aircraft batteries to 30% state-of-charge, as required for air shipment. This battery charger is pre-loaded with all charge and discharge parameters for True Blue Power lithium-ion batteries, allowing maintenance personnel to safely and efficiently top charge batteries and perform scheduled capacity checks.

Benefits and Specifications
  • Specifically engineered to charge, discharge and test True Blue Power lithium-ion aircraft batteries:
    TB17 (17 amp-hour) TB40 (40 amp-hour)
    TB20 (20 amp-hour) TB44 (46 amp-hour)
    TB30 (30 amp-hour) TB60 (60 amp-hour)
  • Variable Power: 12.5 amps charge (nominal); 60 amps discharge (maximum)
  • Alphanumeric LCD display provides battery mode, current, voltage, temperature and timer
  • Charge, Discharge and Fault LED indicators
  • One-year limited warranty

Input Voltage
90 – 132 VAC or 180 – 264 VAC (switch selected)
47 – 63 Hz

Input Power
8.4A at 115 VAC
4.35A at 23 VAC
15A Circuit Breaker

Battery Charge Voltage
Lithium-ion; 28.8V (maximum)

Operating Temperature
0°C to +55°C (32°F to 131°F)

Storage Temperature
-40°C to +80°C (-40°F to +176°F)

Display Measurement
To 0.1 volts, 0.1 amps

Display Accuracy
±0.2 volts, ±0.2 amps

29.5 lbs (13.4 kg)

6.5” W x 14.5” H x 15” D

Battery Connectors
Compatible with MS-3509, 5/16” ring terminals, alligator clamps and temperature cables

Protection and Monitoring
Overcharge, over-temperature and time out for failed batteries, auto shut off after top charge is complete and audible alerts for low voltage and reverse polarity

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