Preserve the health of your caravan battery
J35 Model B-L is an intelligent battery management system with a distribution system and a multi-stage battery charger. J35B-L model has been specially designed for Jayco and can be found on-board modern caravans and motorhomes.
Use J35B-L BMS for charging 12V Sealed Lead-Acid (SLA) batteries including valve-regulated lead-acid (VRLA) batteries, both absorbed glass mat (AGM) and gel batteries. This battery management system is also compatible with lithium batteries (LiFePO4). The power supply is able to deliver 35A maximum to the battery and loads.
Charge your battery to the optimal charge level from AC mains, your solar panels, or from auxiliary (DC or vehicle power). A maximum DC charging current is 15 Amp. Multi-stage battery charger including bulk, absorption, float, and periodic boost charging modes to ensure long battery life. The J35B-L System supports up to 300W of panels with open circuit voltage between 18 and 28 VDC.
J35B-L keeps your battery healthy for a long time thanks to the multiple battery protection features, such as low voltage disconnect and storage mode.
Built in electronic fuses protect the loads. You can also use up to 14 outputs to connect your appliances, including hot water, water pump, lights, and more.
Get more out of the J35B-L intelligent battery management system by connecting it to accessories, such as battery monitors JControl or JHub. They will allow you get access to the monitoring your power supply status in a handy location. Moreover, when used with the ControlNode103, J35B-L is SmartConnect ready and allows monitoring multiple Bluetooth sensors via JHub app.
Input Voltage Range: 240 VAC nominal, ± 10%, 50-60 Hz
Input Surge: < 40 A (cold start)
Output Current: 35A Continuous (load + battery current)
Factory Set Voltage: 13.65 V ±2% (Float voltage)
Output Ripple Voltage: < 150 mV
Over Voltage Protection: < 18 V
Over Current Protection: 35A to 38A (load + battery current)
Battery Current Limit: 15A max
Battery Connect: 10.8 ± 0.2 V
Low Voltage Disconnect: 10.8 ± 0.2 V
Battery Drain after LVD: < 8mA
Efficiency: > 83 %
Cooling Fan: Thermally controlled
Solar Input Current: < 20A
Solar Input Voltage: 15V to 25 V
Ambient: 0°C – 50°C
Weight: 2 kg
Dimensions: 282 x 203 x 65
Standards: Safety: IEC60335-2-29, IEC62109-1,UL458, CSA, C22.2 No.107-1, EMC: CISPR 14, IEC61000-3-2, IEC61000-3-3 Approvals: RCM, UL, cUL
The J35 does not serve as a DC-DC charger. We offer the MiniBoostPRO, which is a DC-DC charger that can connect to the J35.
The J35B-L/J35D features an in-built solar regulator. You can connect the positive and negative leads from your an unregulated 12V solar panel directly to the solar input on your J35B-L/J35D.
If you have a regulated solar panel, it cannot connect to the J35B-L/J35D. It must be connected directly to your battery.
It is not recommended to add additional solar regulators to your auxiliary port as they will likely conflict with one another, causing one to not charge.
No, you cannot. Lithium and lead-acid batteries require different charging profiles to keep charged and will not work together. It is best to use the same type of batteries, brand, model, and date manufactures to get the best overall performance.
The solar card within the J35B-L/J35D will limit the maximum input to ensure your batteries do not become overcharged. If is safe to have solar system that can produce slightly more power than the maximum solar input on the J35B-L/J35D. If the watts are exceeded, it will shut the solar down for approximately 2 minutes. Then, turn it back on once the wattage has dropped back under the input.