A mobile DC fast charger with onboard storage is defined by three figures that behave independently: how fast it delivers, how much energy it holds, and how quickly it refills. A unit strong on one and weak on another disappoints in a predictable way, and the model number indicates none of the three. MPMC POWERTECH CORP., established in 2008 and headquartered in Shanghai Pudong, publishes a BCH range with rated DC output from 80 kW to 600 kW and storage from 70 kWh to 1,075 kWh.
MPMC BCH-500-1000 mobile BESS charger
Reading the Three Figures Together
MPMC's published range makes the independence explicit: the BCH-275-200 at 150 kW with 203.5 kWh, the BCH-600-400 at 400 kW with 407 kWh, the BCH-800-600 at 600 kW with 610.6 kWh listed with 1C charge and discharge, and the BCH-500-1000 at 500 kW with 1,075 kWh.
The last two are the instructive pair. The higher-capacity model delivers slightly less power, because they answer different questions: one turns a vehicle around quickly during a short dwell, the other serves several vehicles across a long window. Choosing on output alone selects the wrong one for a site whose constraint is stored energy.
What Actually Caps the Charging Rate
|
Factor |
Why it caps the delivered rate |
Published MPMC position |
|
Vehicle acceptance |
A charger cannot deliver faster than the vehicle accepts |
DC output voltage range 50–1,000 V on BCH-275-200 and above |
|
Connector current |
Physical limit at the gun |
250 A on BCH-275-200; 350 A on larger models |
|
Simultaneous use |
Two guns may share rather than duplicate output |
Two DC guns from BCH-275-200 upward; behaviour is model-specific |
|
State of charge taper |
Rate falls as the vehicle battery fills |
Delivered energy within the window, not peak rate |
|
Ambient derating |
Output falls at temperature extremes |
−20°C to +50°C with derating above 45°C on larger models |
For a fast-charging application the useful request is delivered energy within the actual dwell window at the site's real ambient, rather than the peak figure quoted at reference conditions.
Integration Is What Distinguishes the Format
A genuinely integrated unit contains the battery, the power conversion stage, the charging modules, the control system and the chassis in one enclosure, and arrives ready to work rather than ready to be assembled. Where conversion equipment sits outside the enclosure, the site has to find somewhere for it and cable between the two, which erodes the deployment speed the format was bought for.
MPMC lists the BCH range as combining an LFP battery system, DC charging modules, an EMS and a mobile chassis in a single unit, with a fully sealed liquid-cooled battery pack on the BCH-275-200 and aerosol fire suppression to CE on that model and above, and full operational status achievable within 24 hours of deployment.
MPMC BCH-800-600 mobile BESS charger
Refilling the Unit Between Sessions
A mobile charger holds energy; it does not create it. MPMC lists AC input from grid, generator set or solar on models from the BCH-275-200 upward at 80 kW to 560 kW depending on model, plus a CCS2 DC input allowing the unit itself to be recharged from a fast-charging station, listed at approximately one hour to full for the BCH-275-200.
Having two routes preserves availability when the primary one is unavailable. Where units rotate to a charging point rather than recharging in place, the number required follows the cycle time rather than simultaneous demand: an operation needing two in service may need three or four once travel and charging are counted.
Deployment Speed and Handling
Weight decides what a site can do with the asset. MPMC lists the BCH-80-70 at 880 kg with six units per 20 ft container, the BCH-275-200 at 2,800 kg on a 3.5 t heavy-duty trailer with an integrated forklift pocket, and larger models at 8,300 kg, 15,000 kg and 19,800 kg in a 20 ft container footprint.
The threshold that matters operationally is whether a unit can be towed or forklifted, or whether each move requires a crane and a road permit. For an operation whose value depends on repositioning, the lighter formats retain far more of the flexibility that justified the purchase.
Efficiency, Throughput and Compliance
MPMC lists maximum system efficiency of up to 91% and cycle life of 6,000 cycles at 90% depth of discharge, with published warranty terms of 3 years or 1.6 MWh per kWh of total output for the BCH-275-200 and larger models and end-of-life capacity retention of at least 70%.
Peak efficiency and efficiency across the working range are different measurements, so the latter is what should be requested where energy is resold. Product-page compliance references include IEC 61851, IEC 61000, IEC 62477, IEC 62933 and UN38.3 depending on model, applied by model and market.
Where the Format Is Documented in Service
MPMC lists a Norwegian deployment at 2 MWh for remote machinery and vehicle charging, configured at 500 kW per unit with CCS2 output of 360 kW at 400 A and 1,000 kWh per unit, a Netherlands 1 MWh grid-connected charging station using a 500 kW / 1,000 kWh integrated unit, and a United Kingdom logistics port operation using eight BCH-275-200 units.
These describe the class of installation supplied rather than a throughput expectation for a different location. What transfers is the arrangement rather than the numbers, since achievable sessions follow the site's own vehicles, dwell windows and recharge route.
Selection Checks
• Read rated output, onboard energy and recharge rate together rather than separately.
• Obtain vehicle acceptance rates and check them against the DC voltage window.
• Confirm whether both guns hold rated output simultaneously on the offered model.
• Request delivered energy within the actual dwell window at the site's real ambient.
• Ask which elements sit inside the enclosure and which are supplied separately.
• Identify the recharge route, including a fallback, before the unit ships.
• Check unit weight against available handling equipment at every intended position.
• Ask for efficiency across the working range, not only the peak figure.
https://www.mpmc-group.com/
MPMC Powertech Corp.
