B767-300 and 300 ER
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Less Severe
Flight Crew Landed As Precaution; Flight Crew Diverted
Aircraft
In cruise at FL330; I observed an EICAS status message; MAIN BAT CHGR. This was a repeat item from the flight before ours. Referenced QRH and [Flight Manual] for direction. No QRH procedure found. Status message list indicates that this message means that the main battery charger has failed. I recalled from previous ground schools that this message is one of a few status messages that can be potentially serious and deserves some attention. I established a SATCOM call with Dispatch and Maintenance. Crew and Dispatch agree with maintenance recommendation to divert flight to [a nearby suitable airport] where the part was available and repairs could be made.We expected to land slightly overweight so [ATC was advised] and Airport Rescue and Fire Fighting was requested. We ran the Emergency Landing Checklist and prepared for our arrival and approach procedure. We also checked the runway distance required at our expected landing weight. A normal approach and landing was made with light braking only below 60 knots. The landing weight was 312;555 lbs.There were also 2 additional mechanical issues on this flight that were not related to the diversion. The crew before us on this jet had also written up the auto throttles as being unstable and erratic. This was addressed by Maintenance and signed off. We also observed that the auto throttles were unstable and erratic with inappropriate; random movement individually; and as a pair. The weather forecast for our ETA at [our international destination] was for 400 meters vis with 100 overcast ceiling; requiring an auto land with auto throttles. Also; descending for [divert airport] in icing conditions; when selecting wing anti ice on at FL220 per our procedure; we observed an EICAS advisory message L WING ANTI-ICE; along with the amber VALVE light near the switch on the overhead panel. I cycled the switch several times at different throttle settings with no success. We descended to a lower; warmer altitude with light rime ice accumulation visible on the wiper frames through the windshield.
[Report Narrative Contained No Additional Information].
B767-300ER flight crew reported receiving MAIN BAT CHARGER EICAS message; so they diverted to a nearby suitable airport.