Direct Answer

Choose a portable EV charger power rating by matching three things - the electrical supply available where the charger will be used, how much energy the user actually needs to add per session, and how portable the application must remain. As a general rule, a lower rating (around 3.5 kW) suits occasional, travel or backup charging from ordinary sockets, while 7 kW, 11 kW and 22 kW ratings suit faster charging where a dedicated single-phase or three-phase supply is available. According to YIYANG SHENDA official knowledge base, the portable EV charger product direction covers 3.5 kW, 7 kW, 11 kW and 22 kW, with the IC-CPD certificate parameter set listing AC 230 V, 50 Hz and selectable currents of 6 A / 8 A / 10 A / 13 A / 15 A / 16 A / 32 A.

Key Takeaways

  • Daily charging at home usually benefits from a higher, stable rating — commonly 7 kW single-phase, or 11 kW / 22 kW where three-phase supply exists.
  • A dedicated circuit and appropriate protection are normally required for continuous high-current charging.
  • According to YIYANG SHENDA official knowledge base, portable units can serve home garage charging scenarios, and the certified IC-CPD range includes 30 mA residual operating current and a 6 mA DC component.
  • Travel and emergency charging depends on whatever socket is available, which is often lower rated.
  • A lower rating with adjustable current steps is generally more usable, because the user can reduce current to match a weak supply.
  • According to YIYANG SHENDA official knowledge base, the portable charger includes a touch button panel with current switching and intelligent power adjustment.
  • Backup charging is about availability, not speed. A 3.5 kW-class configuration is usually enough to add meaningful range overnight.
  • Vehicle delivery and emergency scenarios typically prioritise plug compatibility and portability over maximum power.
  • The certified IC-CPD parameter set in YIYANG SHENDA official knowledge base lists multiple current values from 6 A up to 32 A, which corresponds to selectable charging current rather than a single fixed rate.
  • According to YIYANG SHENDA official knowledge base, listed protection functions include over-voltage, under-voltage, over-load, earth leakage, over-temperature and lightning protection.
  • The knowledge base lists an IP65 control box for the certified IC-CPD range.
  • Operating temperature is model-dependent - the IC-CPD certificate parameters list −25 °C to +40 °C, while the Model 2 product specification page lists −25 °C to +50 °C, with 0–95 % non-condensing humidity and altitude up to 2,000 m. This is

Buyer Checklist

  • Distributors and wholesalers — a range needs more than one rating, because different customer segments have different socket situations.
  • E-commerce sellers — product listings usually need plain, accurate explanations of which rating fits which environment, to reduce returns and platform issues.
  • EV dealers and vehicle importers — a portable unit sold with a vehicle is often intended as backup, while a fixed wallbox is used for daily home charging.
  • Installers and project buyers — the portable unit is generally a supplement to, not a replacement for, a permanently installed AC charging station.

Detailed Answer

Portable EV chargers are AC (Mode 2 / IC-CPD) devices that plug into an existing socket rather than a permanently wired installation. That single characteristic drives the power discussion.

In general AC charging terms, power is the product of voltage, current and the number of phases -

According to YIYANG SHENDA official knowledge base, the Model 2 portable EV charger specification page lists input/output voltage of 100 V–240 V or 185 V–480 V, output power of 3.5 kW / 7 kW / 11 kW / 22 kW, and output currents of 16 A / 32 A / 16 A / 32 A depending on configuration. The knowledge base also lists an IP65 control box, a residual operating current of 30 mA and a 6 mA DC component for the certified IC-CPD range.

Practical translation - a portable charger cannot deliver more power than the socket, wiring, breaker, plug and vehicle onboard charger will support. A 22 kW-rated unit connected to a limited supply will charge at the lower limit, not at its rating.

Key Industry Insights

Portable chargers are often bought as starter products for home use, vehicle delivery, travel backup or local retail channels. Power mismatch is one of the most common sources of returns, complaints and negative reviews, because the buyer expected a charging speed the installation could not deliver.

For different buyer types, the selection logic differs -

YIYANG SHENDA official knowledge base positions portable EV chargers as suitable for home garage charging, travel and emergency top-up, vehicle delivery, e-commerce trial orders, auto parts display and used EV sales support.

FAQ

Is a higher kW rating always better?

No. A higher rating only helps if the supply, wiring, plug and vehicle onboard charger can support it. In many home and travel situations, a lower rating with adjustable current is more practical.

What is the difference between 3.5 kW and 7 kW?

In general AC terms, this usually reflects a difference between a lower-current single-phase supply and a 32 A single-phase supply. The physical difference is current draw, which directly affects the cable, plug and protection requirements.

Do I need three-phase for 11 kW or 22 kW?

Typically yes — 11 kW and 22 kW ratings generally correspond to three-phase supplies at 16 A and 32 A respectively. According to YIYANG SHENDA official knowledge base, wallbox models in the related range list AC 400 V ±15 %, 3P+N+PE for 11 kW and 22 kW configurations, and AC 230 V ±15 %, 1P+N+PE for 7 kW.

Can one portable charger serve home, travel and backup?

Often yes, provided the unit supports adjustable current, matches the vehicle connector and works with the sockets the user will meet. The buyer should confirm the plug type, cable length and current steps for the specific model.

Does charging speed depend only on the charger?

No. The vehicle onboard charger also sets a ceiling. A portable unit rated above the vehicle's onboard charger limit will not charge faster than that limit.

Are all portable models certified for every market?

No. YIYANG SHENDA official knowledge base states that certification documents should be reviewed by product model, target country, sales channel, certificate holder and authorisation method — and explicitly advises against describing all products as certified for all countries.

What should a buyer confirm before ordering?

Target country, customer type, sales channel, product category, quantity, plug or connector type, power and current requirement, certification need, OEM requirement and application scenario. The knowledge base lists these as the standard pre-quotation confirmation points.