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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: PowerOak
  • Model Number: PS5B
  • Specification: Mini
  • Application: Home
  • Output Voltage (V): 100/110/120/220/230/240VAC±3%
  • Load Power (W): 300W
  • Solar Power (W): 120W
  • Work Time (h): 24 Hours
  • Battery capacity: 400Wh
  • Battery type: Sumsung Li-ion 18650 Battery
  • PV Charge: MPPT 120W /4H
  • AC Output: 100V/110V/120Vac 220V/230V/240Vac
  • DC Output: 4 X USB port 1 X 12V Car port 2 X DC 6mm port
  • Overload Ability: 120%<load<130% @10min 130%<load<150% @10s
  • On/off Grid: Off grid
  • Certificate: CE RoHS IEC SAA
  • Product Size: 230*140*235mm
  • Weight: 5.6Kg

Packaging & Delivery

Packaging Details Gift packing box or OEM packing box
Delivery Time Shipped in 20 days after payment

300W portable electric camping power supply solar generator 400wh


Video Links

For more details about our ESS units, you can reach our videos from following links: 

PS5B Portable Solar Generator:  https://youtu.be/4hDA6bk9iNs

PS10B Portable Solar Generator:  https://youtu.be/_MYwmpqmGWM

PS3215B&PS4020B Off grid energy storage systems ESS:  https://youtu.be/8B8dLo4JWvk

PS6530B/PS8030B on & off grid solar gernerator:  https://youtu.be/QvF1LasEjOY


Company Information

PowerOak is a subidiary of Kayo group which a China-Japan joint venture company, established in 1999,specialized in production polymer li-ion batterymobile phone batterymobile power bank,Energy storage system etc 

Total staff:2000     Gross area: 35000m²   OEM/ODM manufacturer   Japanese quality with Chinese price 

Main products line: Mobile Power Bank, Energy Storage System, Cylindrical Li-ion Battery, LiFePO4 Li-ion Battery, Polymer Li-ion Battery. 

All our products are with UL\ CE\ FCC\ RoHS\ UN38.3 \PSE\ REACH\ IEC621333\KC\SAA certificates.

Our Services



 Battery capacity meets your needs

No 1 PowerOka PPS (Portable Power Supply) series are guaranteed for 2 year. they offer DC&AC power supply wherever and whenever you need power, like RV, camping, construction site, house power bankup, disaster relife etc.

No 2 Energy Storage System (ESS) is guaranteed for 5 years, which are sufficient to power most homes during peak evening hours, or when the grid fails. Multiple batteries may be installed together for homes with more energy need.

No 3 Lithium battery capacity ranges from 400Wh to 16kWh to meet different needs.

Why PowerOak


Advanced Technology 

self-patented, unique topology

Designed & manfactured by PowerOak, guaranteeing the highest system compatibility

Advanced laboratory & equipment

Multiple applications and mulitiple operating modes

Built-in high quality li-ion battery with self-developed BMS for ESS specailly

Innovative R&D team, follow up the market, ahead of trend

200 experienced engineers guarantee the high quality

Competitive Price

Self-design & self-manufacture

Lithium battery manufacturer for 16 years

112000m² factory with 1000 employees

Great Service

Meet the needs of different customers is our lifelong goal

OEM/ODM project are welcome

Provide consistent & considerable products and services to global customers 



Contact us

Ms. Catherine Huang

Skype: necaca0102

QQ/Wechat: 267213706

WhatsApp/Mob: +86 137 28607297

Email: catherine (at) poweroak.net/  catherine (at) kayomaxtar.com

Website: www.kayomaxtar.com/ www.poweroak.net/  www.batteryess.solar


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