Black Rock Systems recently announced the first upgrade for its Blackrock Auxiliary Power Unit (APU) — an optional truck-battery monitoring system. It lets users set the APU to operate in a standby mode, without running either the truck’s main engine or the APU engine. When the APU detects that the main engine’s batteries are discharged, it will switch from standby to start using its 55-amp alternator to charge the batteries back to their proper voltage. The system will automatically shut off at a pre-determined time interval. The feature is important for users with 12-volt devices that continue to discharge the main batteries during extended downtimes. This optional low-cost feature can be retrofitted to any deployed Blackrock APU without major component replacement. The product will be available in quantity in May 2006.

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