E-mail:  sales6@lithiumbattery-rj.com   |    Tel:  0086-13430203848
Share to:

40kwh Solar battery storage system

40kwh Lithiuim Battery, 10KW Hybrid Inverter, 5400W Solar Panels, 100A solar charger MPPT
Lithium Battery:
Solar Panel:
solar charger Mppt:
  • RJ-OffGrid-40K
  • RJ
  • RJ-OffGrid-40K


RJ is a lithium battery Manufacturer for over 16years, recognized by customers from Australia,Europe and North America. We offer Top quality with very good price for lithium lifepo4 batteries! RJ also has excellent partners who work with us for solar inverter, solar panels, solar charger mppt, with which RJ is capable of provding professional turnkey solutions to various applications for solar off grid and on grid system!


solar system

For 40Kwh Solar off grid system,  a basic example configuration as below:

  1. 40kwh RJ Powerwall battery

  2. 10KW RJ Hybrid Inverter

  3. 15pcs 360W solar panels, together 5400W

  4. 100A solar charger Mppt

Note this system is expansible, plug and play, you can simply add more lithium batteries to make a larger capacity system in the future. 

Besides the basic configuration we recommend, you can also do with your own preference. we have different optionsl for you, pLS check out different options in our website:



Electrical Specifications
Inverter Output Model 1KW 1.5 KW 2KW 3.KW 4KW 5KW 6KW 8KW 10KW 12KW 15KW
kContinuous Output Power 1KW 1.5 KW 2KW 3KW 4KW 5KW 6KW 8KW 10KW 12KW 15KW
Surge Rating (20Secs) 3KW 4.5 KW 6KW 9KW 12KW 15KW 18KW 24KW 30KW 36KW 45KW
Output Waveform Pure Sine wave/Same as input(Bypass Mode)
Nominal Efficiency >88%(Peak)
Line Mode Efficiency >95%
Power Factor 0.9-1.0
Nominal Output Voltage rms 100-110-120Vac / 220-230-240Vac
Output Voltage Regulation ±10% RMS
Output Frequency 50Hz ± 0.3Hz/60Hz ± 0.3Hz
Short Circuit Protection Yes( 1sec after fault )
Typical transfer Time 10ms(Max)
THD < 10%
DC Input Nominal Input Voltage 12.0Vdc/24.0Vdc/48.0Vdc 24.0Vdc/ 48.0Vdc 48.0Vdc
Minimum Start Voltage 10.0Vdc/ 10.5Vdc for 12Vdc Mode  *2 for 24Vdc,  *4 for 48Vdc ;
Low Battery Alarm 10.5Vdc/ 11.0Vdc for 12Vdc Mode
Low Battery Trip 10.0Vdc/ 10.5Vdc for 12Vdc Mode
High Voltage Alarm 16.0Vdc for 12Vdc Mode
Low Battery Voltage Recover 15.5Vdc for 12Vdc Mode
Idle Consumption-Search Mode < 25 W when Power Saver On.
Charger Output Voltage Depends on battery type
Charger Breaker Rating 20A 20A 20A 25A 32A 40A 40A 50A 80A 80A 80A
Max Charge  Power Rate 1/3 Rating Power
Battery Initial Voltage for Start 10-15.7Vdc for 12Vdc Mode *2 for 24Vdc,  *4 for 48Vdc ;
Over Charge Protection Shutdown 15.7Vdc for 12Vdc Mode
BTS Battery Temperature Sensor (Optional)  Yes

Variances in Charging Voltage & S.D Voltage Based on the Battery Temperature.


Bypass & Protection Input Voltage Waveform Sine wave (Grid or Generator)
Nominal Voltage 100-110-120Vac / 220-230-240Vac
Max Input AC Voltage 150VAC For 120Vac LV Mode;  300VAC For 230Vac HV Mode;
Nominal Input Frequency 50Hz or 60Hz (Auto detect)
Low Freq Trip 47±0.3Hz for 50Hz, 57±0.3Hz for 60Hz
High Freq Trip 55±0.3Hz for 50Hz, 65±0.3Hz for 60Hz
Overload protection (SMPS load) Circuit Breaker
Output Short circuit protection Circuit Breaker
Bypass Breaker Rating 20A 20A 20A 25A 32A 40A 40A 50A 80A 80A 80A
Transfer switch Rating 30Amp for TUV 40Amp for TUV 80Amp for TUV
Bypass Without Battery Connected Yes (Optional)
Max Bypass Current 30Amp 40Amp 80Amp
Solar Charger (Optional) Rated Voltage 12Vdc / 24Vdc / 48Vdc
Solar Input Voltage Range 15-45Vdc / 30-70Vdc / 60-100Vdc
Rated Charge Current 40 or 60A
Rated Output Current 15A
Self Consumption < 10mA
Bulk Charge (Default) 14.5Vdc for 12Vdc Mode *2 for 24Vdc, *4 for 48Vdc
Floating Charge(Default) 13.5Vdc for 12Vdc Mode
Equalization Charge(Default) 14.0Vdc for 12Vdc Mode
Over Charge Disconnection 14.8Vdc for 12Vdc Mode
Over Charge Recovery 13.6Vdc for 12Vdc Mode
Over Discharge Disconnection 10.8Vdc for 12Vdc Mode
Over Discharge Reconnection 12.3Vdc for 12Vdc Mode
Temperature Compensation   -13.2mV/°C for 12Vdc Mode
Ambient Temperature 0 ~ 40°C(Full load)  40 ~ 60°C(Derating)
Mechanical Speccifications Mounting Wall Mount
Inverter Dimensions (L*W*H) 388*415*200mm 488*415*200mm 588*415*200mm 706*415*212mm
Inverter Weight (Solar Chg) KG 21 +2.5 22 +2.5 23 +2.5 27 +2.5 38 +2.5 48 +2.5 49 +2.5 60 +2.5 66 +2.5 70 +2.5 83+2.5
Shipping Dimensions (L*W*H) 550*520*310mm 650*520*310mm 750*520*310mm 900*540*410mm
Shipping Weight (Solar Chg)KG 23 +2.5 24 +2.5 25 +2.5 29 +2.5 40 +2.5 50 +2.5 51 +2.5 62 +2.5 68 +2.5 72 +2.5 95+2.5
Display Status LEDs / Status LEDs+LCD









Solar System Voltage

12V/24V/36V/48V Auto work


PV Operating Voltage

18150Vdc@12V 35150Vdc@24V  50150Vdc@36V ?60150Vdc@48V

Max. PV input power

12V 700W

12V ?900W

12V 1000W

12V 1200W

12V 1300W

12V 1400W

24V 1400W

24V 1800W

24V 2000W

24V 2300W

24V 2600W

24V 2800W

36V 2100W

36V 2600W

36V 3000W

36V 3300W

36V 3800W

36V 4200W

48V 2900W

48V 3400W

48V 4000W

48V 4600W

48V 5000W

48V 5400W

Rated Output Current

50A Adjustable(0A50A)

60A Adjustable(0A60A)

70A Adjustable(0A70A)

80A Adjustable(0A80A)

90A Adjustable(0A90A)

100A Adjustable(0A100A)

Rated DC load Current


Self consumption


Max.Conversion Efficiency




PV array short circuit, over charging,battery reverse polarity,output short circuit

Battery charging

Battery Type

Sealed ?Gel AGM ?Flooded ?Lithium

Charge algorithm

4 stage: Bulk, Absorption, Float, Equalize charging

Bulk charge voltage

Sealed: 14.4V AGM 14.2V ?Gel:14.2V Flooded:14.6V User defined:10-15V

Float charge voltage

Sealed/Gel/AGM:13.8V ?Flooded:13.7V User defined:10-15V

Equalize charge voltage

Sealed 14.6V ?AGM:14.8V Flooded:14.9V

Load disconnect voltage

10.5V12V adjustable

Low voltage reconnect voltage


Temperature compensation

5mV//2V with BTS


Communication Port

RS485(Standard) Ethernet RS232 Optional with On line monitoring system


Net weight



9 kg

Gross weight



10 Kg






Heatsink cooling




Ambient operating temperature


Storage Temperature



100% non-condensing

RJ-solar panels

Type Capacity/W Voltage Size(mm)
PMS100W 100 18V 880 670 30
PMS120W 120 18V 1070 670 30
PMS150W 150 18V 1480 670 30
PMS160W 160 36V 1480 670 30
PMS170W 170 36V 1480 670 30
PMS180W 180 36V 1070 990 35
PMS190W 190 36V 1070 990 35
PMS200W 200 36V 1170 990 35
PMS240W 240 36V 1320 990 35
PMS250W 250 36V 1400 990 35
PMS260W 260 36V 1480 990 35
PMS270W 270 36V 1530 990 35
PMS280W 280 36V 1580 990 35
PMS290W 290 36V 1580 990 40
PMS320M-72 320 36V 1940 990 40
PMS325M-72 325 36V 1940 990 40
PMS330M-72 330 36V 1940 990 40
PMS335M-72 335 36V 1940 990 40
PMS340M-72 340 36V 1940 990 40
PMS345M-72 345 36V 1940 990 40
PMS350M-72 350 36V 1940 990 40
PMS355M-72 355 36V 1940 990 40
PMS360M-72 360 36V 1940 990 40


Type   Lifepo4 Type Weight Cycles Warranty RS485
5kwh Wall   mounted 55kg 6000times 10years Available
7kwh Wall   mounted 70kg 6000times 10years Available
10kwh Floor/Wall   Mounted 100kg 6000times 10years Available
15kwh Floor   Mounted 150kg 6000times 10years Available
20kwh Floor/Wall  Mounted 200kg 6000times 10years Available
30kwh Floor/Wall/Rack 300kg 6000times 10years Available
40kwh- Rack   Mounted 400kg 6000times 10years Available
50kwh Rack   Mounted 500kg 6000times 10years Available


•          More than 6000 Cycles @80% DOD ( depth of discharge)

•          Battery modules available for parallel and series for higher voltage and capacity

•          BMS Passive cell balance funciton

•          IP66, IP67, water proof, dust proof, Temperature monitoring

•          Customization for Size and Discharge and charge rate

•          Free of Maintenance, contains no poisonous material

•          No leakage, no hazardous chemistry

•          Quick delivery

•          Lighter in weight, smaller in size to save space.

•          Powerfull to increase robust operation for your marine boat or RV

•          Fast charging and high power discharge rate available

•          No need to add water nor worry about maintenance.

•          We offer 5years regular warranty and it can be extended up to 10 years.

With powerful capacity of Lithium Battery production, RJ is able to provide 1 to 1 customization service. No matter you only buy 1 pcs battery for your own use, or you are a company looking for bulk order of LiFePO4 Battery Pack, RJ will always meet your full satisfactions!



production line


customer reviews





packing & delivery


why RJ

1. Quick delivery

Fast delivery is key factor for clients to compete in the market. We attach much importance to quick delivery as much 

as we do in our LiFepo4 lithium battery quality. We will keep our clients updated with tracking number all the time and latest tracking info until the order of LiFePO4 lithium Battery arrives at our clients safely.


2. Top quality

As a LiFePO4 lithium battery Manufacturer for over 16years in China, We have been devoting ourselves into innovative 

R&D of LiFePO4 Lithium Battery, Top quality is what makes RJ distinguished in todays market and what earns RJ a highly reputation in the international market of LiFepo4 Lithium Battery.


3. Customization Available

We can help customize the charge and discharge characteristics of LiFepo4 lithium battery to meet your specific needs, 

 and We can print your company logo on the LifePO4 battery to help advertise your company in the market


4. 7*24 service

Timely and reliable customer service is very important to our clients, which will influence a smooth relationship Therefore, we 

are and will always provide very Professional Pre-sales as well as Whole-hearted after-sales service for 24hours a day, 7days a week


5. Reliable Warranty

We offer 5Years warranty for our regular products, and offer 10years warranty for some of our enhanced products. If any defective LiFepo4 battery occur, we will send you a brand new one free of charge, and you do not need to return the defective one because we understand the international shipping fee is too expensive.RJ believe when we do our service with whole heart, We will earn our customers trust and earn our high reputation back!



Quick Links

Copyright © 2019 RJ Energy Co.,Ltd. All rights reserved.
Technology by leadong