Basic Info.
Model NO.
B2B122425
Input Voltage
12-24/12V, 12V-24V
Type
Lead-Acid Battery Charger, Ni-CD Battery Charger
Charging Type
Solar Charger, Solar Charger
Principle
Half-Bridge Charger, Intelligent Charging
B2b Charging Current
12V, 25A
Max.Charging Power
650W
Charge Battery Type
Gel, Sealed, Flooded, LiFePO4, Lithium-Ion
APP
Support
Bluetooth
Support
Transport Package
Neutral
Specification
neutral
Trademark
OEM
Origin
Shenzhen
Production Capacity
50000
Product Description
DC to DC Converter MPPT Solar Charge Controller Battery charger
Features
This is a all-automatic DC-DC battery charger, you can use the battery (12V) to charge the battery (12V) (B2B), specially designed for RVs, exposed cars, campers, ships, etc.B2B126030: 12V-12V/60A BS123020: 12V-12V/30A
Technical Data
Main battery " Bord " | |
Lead-Acid, Gel, AGM Batteries Nominal Voltage | 12V |
LiFePO4 Nominal Voltage | 12.8V |
lithium- ion( NCM) Nominal Voltage | 11.1V |
Capacity (Battery Size), recommended: | 45-280AH |
Vehicle Starter Battery "Start II": | |
Vehicle Starter Battery Nominal Voltage: | 12V |
Min. Battery Capacity (Size), recommended: | 60AH |
12 V / 12 V B2B Charging operation | |
Input Voltage Range "Start II" ,"D+" controlled: | 10.5-16V |
Maximum charging power: | 650W |
" Bord " Max. charge current | 30A |
Activation Control Input "D+" | 8-16V |
Signal Output "OK/TR", Switch Position "TR", Cutoff Relay Bypass/max | 12V/1A |
Signal Output "OK/TR", Switch Position "OK" | 12V/1A |
Input "T T" for Battery Temperature Sensor "Board I": | YES |
" Ss-" "Ss+" Inputs Sensor Cables "-" and "+" for Battery "Board I": | YES |
stand-by current | 24mA |
Main battery overvoltage protection | 15.5V |
weight | 1.44kg |
demension | 190×194×70mm |
Operating temperature | -20-50ºC |
B2B Operation
mobile operation from dynamo and starter battery (Battery to Battery):
it refers to charging the main battery through dynamo and starter battery, .If it is not used in the Vehicle , you can also use one battery (12V) to charge another
- . The efficient charging converter (booster) allows full charging of the board battery during driving.
- . It increases/reduces the voltage to the level, which is required for precise charging of the board battery with the optimum characteristic line of charging.
- . The simultaneously supplied 12 V consumers are protected against overvoltage and voltage fluctuations.
Further Characteristics of the Unit
- The output voltage is stabilized, free of peaks, smoothed and filtered.
- Galvanic isolation between input and output:
- No overvoltage at the output and thus protection of the consumer if the ground line is lost.
- Clean, undisturbed mass ratios, even with long supply lines.
- Stable operating voltage on site in mobile operation, e.g. Containers, trailers, roll containers etc.
- Filtering and suppression of disturbances on the input to the output side.
- Fully automatic continuous operation: The DC-DC converter can constantly work with the battery
- Surveillance-free operation: multiple protection against overload, overheating, over voltage, short circuit, Misconduct and deep discharge of the battery through electronic regulation to complete
- Switch off by built-in safety switch.



Security guidelines
Intended use:
The DC-DC converter was built on the basis of the valid safety guidelines. The use may only be:
- On lead-acid, lead-gel or lead AGM or LiFePO4 batteries of the specified nominal voltage.
- With the specified cable cross-sections for inputs and outputs.
- With fuses of the specified strength near the battery to protect the wiring between the batteries and DC-DC converter connections.
The device must never be used in places where there is a risk of gas or dust explosion consists!









Installation of the Unit
- . Install the charger near the board supply battery I (for short charging cables) at a clean, even and hard mounting surface,which is protected from moisture, humidity and aggressive battery gases. The unit can be installed in any position.
- . To be installed in a moisture-proof, water-proof place, corrosion-proof place
- . When the charging controller is working, the fan will bring out heat, so when installing, ensure that there is at least 10cm of space behind the charger controller
- . Choose the appropriate cable specifications, length and fuse specifications, reverse connection of the battery will cause serious damage to the eq
Why Choose us?
> Oxiang is located in Shenzhen, China, a new type of city in rapid development. We focus on CCTV Camera researching and manufacturing from 2006;
> Sales person provide Pre-sales and after-sales service; Professional engineers are always standby and assist offer solutions;
> Cooperate with multiple departments to complete raw material procurement, production, inspection, delivery and other steps;
> The product comes with a one-year warranty.