Eco-Tech J-28V/200-I Case Ground Alternator

Since market introduction in mid-2002, patented Eco-Tech high amp Alternators have been installed and used successfully by both original equipment and aftermarket fleet operators. Eco-Tech Alternators provide superior high output at idle performance (80% of rated output at idle) and unmatched efficiency, which has been experienced in diesel powered military boats; fire trucks; ambulances; utility company bucket trucks; school, shuttle and party buses; commercial fishing boats, and other applications where significant operating time at idle occurs at low engine speeds.

The J-28V/200-I  Alternator is a replacement for J-180 mount alternators that have a center-to-center measurement of 8.5” between the drive end pivot hole and the threaded adjusting hole. The J-28V/200-I  Alternator has the standard measurement of 4” between the pivot ears.

Weight 44 lbs
Dimensions 14 × 11 × 11 in


SKU: J-28V/200-I 200A Category: Tag:

Unpacking, Installation & Warranty

Features & Benefits

  • Eco-Tech 28V 200A alternators generate 145A (80% of rated full output) at 1,800 alternator RPM’s which is engine idle. Idle output is about 2 and 1/2 times the output of similar size claw pole (Lundell) alternators.
  • Designed for vehicles that spend significant operating time at idle. Typical applications for our isolated ground units are commercial fishing boats, and other seafaring vessels.
  • High efficiency of 80% @ 1800 Alternator RPM
  • Eliminate the 50% fuel usage increase caused by high idle
  • Patented technology
  • Voltage set point 28.3V
  • Permanent magnet and wound rotor design
  • One wire hook up, self exciting
  • Soft start
  • Large brushes for longer life
  • Heavy duty bearings
  • Three high efficiency internal fans
  • Internal regulator