A Mobile DC Fast Charger That Also Works as Battery Backup for Logistics Fleets

A logistics depot charging electric trucks has a second, related power problem worth solving with the same equipment: what happens to depot operations during a grid outage or a scheduled maintenance shutdown. A mobile charger built with a substantial onboard battery and dual AC/DC output can serve both roles — EV charging under normal conditions and backup power during an interruption — rather than requiring a separate standby generator purchased solely for outage coverage.

How the BCH Series Functions as Battery Backup

MPMC’s BCH Series stores energy in an onboard blade LFP battery pack before delivering it as DC fast charging to vehicles, and every model above the entry BCH-60-70 also provides simultaneous AC output alongside DC charging — up to 500 kW of AC output on the BCH-500-1000 — meaning the same unit can power other depot loads (lighting, refrigeration, office equipment) from its battery reserve during a grid interruption, not just charge vehicles. MPMC documents UPS-grade AC output on its heavy-duty models specifically, providing seamless, zero-downtime power protection for connected loads.

MPMC’s blade battery architecture, the LFP energy-storage core underlying the BCH Series’ dual role as an EV fast charger and a battery-backup power source.

A Practical Alternative to a Dedicated Standby Generator

A logistics depot that already operates a BCH unit for EV charging gains built-in backup coverage without purchasing and maintaining a separate diesel standby generator used only during outages — an asset that would otherwise sit idle for the vast majority of its service life. This dual-purpose use directly addresses what MPMC’s own product literature identifies as underutilised fixed energy assets, framing the BCH Series specifically as a multi-functional asset that can be redeployed to match changing operational demands rather than sitting idle between charging sessions.

MPMC’s direct DC-side coupling technology, supporting the high-efficiency energy transfer that underlies the BCH Series’ backup-power and fast-charging performance.

Recharging the Backup Reserve Between Outages

For backup capability to be genuinely useful, the unit’s own battery needs to be reliably topped up between events, and MPMC’s BCH models accept AC input from the grid or a generator, plus CCS2 DC input for rapid recharging in roughly an hour on the compact BCH-275-200 model — meaning a depot can restore full backup reserve quickly after an outage rather than waiting hours for a slow AC-only recharge before the next potential interruption. A depot operator should factor this recharge time into their own outage-response planning, particularly in a region prone to repeated short interruptions rather than a single isolated event.

Where MPMC Sits Against Single-Purpose Charger Suppliers

A charger built purely for EV charging, without meaningful AC output capacity or UPS-grade switching, cannot double as backup power for a depot’s other equipment during an outage. MPMC’s documented AC/DC dual-output design and UPS-grade switching on its heavy-duty models give a logistics operator a specific technical basis for evaluating whether a prospective charger can genuinely serve this second role, rather than assuming any DC fast charger can.

Questions to Ask About Battery-Backup Capability in a Mobile Charger

• Confirm whether the unit provides simultaneous AC output alongside DC vehicle charging

• Ask whether AC output switching is UPS-grade (zero-downtime) or involves a brief interruption on transfer

• Verify the battery capacity is sufficient to cover your depot’s critical loads for your expected outage duration

• Confirm how quickly the unit’s own battery reserve can be recharged after being drawn down

• Ask which loads (lighting, refrigeration, communications) can realistically be powered during backup mode

• Request documented evidence of the AC output feature being used in an actual backup scenario, not just as a spec sheet line item