Mesian Power Relay Vehicle · Product Manual V4.1
Power Relay Vehicle
Power at your side — mission delivered. 241 kWh mobile energy storage trailer for field operations, emergency response and large events.
Sample vehicle photo · towing transit, roller door closed
A Battery Station That Moves — Not a "Better Generator"
Just as networks rely on relay stations, power can be relayed too: charge from the grid at night with off-peak rates, draw power anywhere by day; when capacity runs low, swap a battery cluster to keep going — without downtime. Low noise, zero emission (in e-drive mode), mobile, and quick-swap ready. In places with no grid, noise limits or zero-emission requirements, it is simply the better answer.
Six Application Scenarios
Runtime estimated at 241 kWh × 90% usable capacity ÷ typical load; actual varies with load, temperature and line loss.
Power tools, lighting and CCTV on construction sites, mines and pipeline jobs with no grid.
Rapid-deployment power for command, communications and medical equipment at disaster sites.
Diesel-generator replacement for stages, lighting and LED walls — quiet and zero emission.
Stable backup for remote towers and repeaters; remote deployment, low maintenance.
Daily / weekly rental for short-term needs — no purchase, maintenance or storage cost.
Camp power for survey and research teams; altitude ≤ 2000 m, wide temperature range.
Four Core Advantages
80%+ Energy Cost Saving
Grid off-peak charging costs roughly 1/5 of diesel generation; overall energy cost cut by 80%+ in typical site conditions (estimated).
241 kWh Large Capacity
15 modular LFP clusters, multi-circuit simultaneous output — 14 h at 15 kW, 27 h at 8 kW, 43 h at 5 kW.
IP54 Industrial Protection
Dust & splash proof (GB/T 4208-2017), -20°C ~ 50°C operation, altitude up to 2000 m.
Tow & Power in Minutes
A-frame hitch for qualified pickup / light trucks; park, engage the brake and supply power. Four-wheel chassis handles soft ground.
Fully Integrated Design
- 8 independent industrial cable reels — multi-circuit output, tidy cable handling.
- Integrated distribution cabinet with breakers, meters and protection modules.
- Roller shutter side door — full access for operation, inspection and fast connection.
- Two-axle four-wheel chassis with parking brake; A-frame hitch with anti-drop device.
- Cluster-level quick swap — replace one battery cluster without stopping the others.
Key Specifications
| Parameter | Value | Basis |
|---|---|---|
| Nominal energy | 241 kWh（15 × 16.08 kWh LFP） | Design value |
| Rated output | 50 kW（55 kW / 10s peak） | Design value |
| Output voltage | 220V 单相 / 380V 三相，纯正弦波 | Design value |
| Grid charging | 30 kW（0→100% ≈ 8h）；选配 50 kW 直流快充 ≈ 5h | Design value |
| Emergency charging | External diesel generator up to 50 kW | Design value |
| Ingress protection | IP54（GB/T 4208-2017） | Design value |
| Operating temperature | -20°C ~ 50°C（>45°C 降额） | Design value |
| Curb weight | 3200 kg | Engineering estimate |
| Dimensions (L×W×H) | 3000 × 2200 × 2100 mm（±5mm） | Engineering estimate |
| Chassis | Two-axle four-wheel trailer, A-frame hitch | Design value |
| Cell cycle life | ≥6000 次（0.5C / 25°C / 80% EOL） | Per test report |
Design value = design target; engineering estimate = pre-production projection. Items marked as design / estimate are subject to measured data and type-inspection reports before mass production.
Sample Vehicle Gallery
Click any photo to enlarge in high resolution.
Safety & Fire Protection
Three-Level Alarm Linkage
Over-voltage, under-voltage, over-current, high/low temperature, insulation faults and more are covered by graduated protection: Level 1 — derate 50% with audible/visual alert; Level 2 — current to 0A, charge/discharge stopped; Level 3 — relays cut off for full isolation. Low capacity uses load-limiting instead of cut-off, so your load never drops unexpectedly.
Per-Pack Aerosol Fire Suppression
Each battery PACK carries an independent S-type aerosol suppression unit: intelligent heat detection, auto activation, discharge within 6 s, full-flood coverage with minimal residue and low corrosion — physical + chemical dual suppression.
Full Lifecycle Service
FAQ
What driving license is required?
On public roads the combination (tractor + trailer) usually exceeds 4,500 kg GVM, so an A2 license is required. C6 only covers combinations under 4,500 kg and is not applicable.
Which vehicle can tow it?
A pickup or light truck with towing approval and a rated towing mass of at least 3,200 kg. Ordinary sedans / SUVs must not tow it on public roads.
How is it recharged?
Grid charging is the primary way: 30 kW, about 8 hours to full (optional 50 kW DC fast charge ≈ 5 h). In off-grid areas an external diesel generator (max 50 kW) can be used as a transitional backup.
How do you move it on site?
The unit has no self-drive power. On-site repositioning uses an optional detachable shunting device (site use only) or a forklift (≥4.8 t). Never use the shunting device on roads.
Can battery clusters be replaced separately?
Yes. 15 modular clusters are independent in grouping, cooling and protection; a faulty cluster can be replaced while the rest keep supplying power.
Can manual specs be used as contract values?
No. Values are marked as design values / engineering estimates; before mass production, measured data and type-inspection reports prevail. Contract commitments are subject to the signed agreement.
Power Follows You. Mission Delivered.
Hunan Mesian Safety Technology Co., Ltd. · Sales & rental: daily / weekly terms available
Business：hankxieyun@163.com · xieyun@meisian.cn
Send an Inquiry Download Manual PDFDisclaimer: parameters are for reference only. Items marked "design value / engineering estimate" are subject to measured data and type-inspection reports before mass production, and to the signed contract. The manual is revised periodically — contact your sales manager for the latest version. © 2026 Hunan Mesian Safety Technology Co., Ltd.
