Industrial fleets of electric vans, trucks and site vehicles depend on their depot chargers, and those chargers depend on the grid. A mobile BESS charger changes that relationship: it stores energy in its own battery and delivers DC fast charging whether or not the grid is available. MPMC's BCH Series, built by the Shanghai-based manufacturer MPMC and proven in the UK, the Netherlands and Norway, gives fleet operators the tools for a complete outage plan.

An Outage Plan in Four Stages

Before: Keep Energy in Reserve

BCH units recharge from the grid during quiet hours or from solar, and the EMS with 4G connectivity reports each unit's state of charge remotely. Operators can hold a reserve for resilience while using the rest of the stored energy for daily charging and peak support, so the asset earns its keep every day. Units can also move between depots, so one resilience reserve can cover several sites in a region.

During the First Hours: DC Charging Without the Grid

When the supply drops, stored energy keeps vehicles moving. The BCH-275-200 delivers 150 kW from 203.5 kWh, the BCH-600-400 delivers 400 kW from 407 kWh, the BCH-800-600 delivers 600 kW from 610.6 kWh and the BCH-500-1000 delivers 500 kW from 1,075 kWh, each through two CCS2 guns, so priority vehicles return to service quickly.

Keeping the Depot Running: UPS-Grade AC Output

The BCH-800-600 and BCH-500-1000 add UPS-grade AC output with cabinet-enclosed activation, providing seamless, zero-downtime protection for depot loads. Their AC outputs of 200 kW and 500 kW, with PowerLock and CEE sockets, keep lighting, IT, doors and dispatch running alongside vehicle charging.

Extended Outages: Recharging From Generator Sets or Solar

If an outage runs on, BCH units recharge through their AC inputs from a generator set, through a dedicated solar input, or through CCS2 DC input from another battery. The BCH-500-1000 accepts up to 560 kW through an 800 A PowerLock connection, and MPMC can supply the generator sets and solar arrays as part of the same resilience package. During a long event, the generator set can run at an efficient load to recharge the BCH unit while the battery handles the peaks of vehicle charging.

Table 1. BCH capabilities at each stage of a grid outage

MPMC BCH Series mobile BESS chargers supporting electric vehicles in winter conditions.

Choosing the Right Unit for Your Fleet

Light vehicle fleets and smaller depots often start with the BCH-275-200, which travels on a 3.5 t trailer and can be moved between sites. Truck depots and larger industrial fleets use the BCH-600-400, BCH-800-600 or BCH-500-1000, and the two largest models add the depot backup function. All units reach full operation within 24 hours of arrival, so a site can also bring in extra capacity when a grid upgrade or planned maintenance is scheduled.

Table 2. BCH models for outage-ready fleet charging

Note: The table shows selected models; the BCH Series also includes the BCH-80-70 and BCH-60-70.

MPMC BCH-800-600 mobile BESS charger, which combines 600 kW DC charging with UPS-grade AC output.

Blade LFP battery packs, tested for fire, water immersion, collision and crushing, give 6,000 cycles at 90% depth of discharge, and the BCH-275-200 and larger models carry aerosol fire protection, a 3-year system warranty and a 5-year battery performance warranty. In the UK, eight BCH-275-200 units already keep electric trucks moving at a logistics port where the local grid is constrained, and BCH units in the Netherlands and Norway deliver charging for port, logistics and construction operations.

Building an Outage Plan With MPMC

• List priority vehicles and the energy each needs per shift

• Identify depot loads that need backup power

• Set the energy reserve to hold for outages

• Plan recharging from generator sets or solar for long events

• Contact MPMC at sales@mpmc-china.com or WhatsApp +86 150 0085 4420 for an outage-ready charging proposal