Top 9 DC-DC Charger Dual battery – Automotive Replacement Batteries & Accessories

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1. Renogy


Renogy DCC50S 12V 50A DC Board Battery Charger with MPPT

Renogy #ad - Solar input Voltage : 25V. Sophisticated automatic 3-phase charging profile Bulk, Boost, and Float ensures your service battery will be accurately charged at the correct voltage levels to 100%.

The renogy dc-dc on-board battery charger with mppt is designed to charge service batteries at the most effecient rate from two DC input, solar panels and the vehicles alternator. Maximum solar Input Power : 660W. Smart protection features: battery isolation, over-voltage protection, battery temperature protection, over-current protection, reverse current protection, overheat protection, solar panel and alternator reverse polarity protection. Compatible with multiple deep cycle battery types: AGM, GEL, Flooded, and Lithium. Max. Built-in voltage sensitive Relay VSR for user friendly setup with traditional alternators.
BrandRenogy #ad
ManufacturerRenogy #ad
Height3 Inches
Length9.6 Inches
Weight3.13 Pounds
Width5.7 Inches
Part Numberfor Flooded, Gel, AGM, and Lithium Batt
ModelRenogy DCC50S 12V 50A DC-DC
Warranty1-year material warranty

2. Renogy


And Lithium Batteries Using Multi-stage Charging, Renogy 20A DC to DC Battery Charger for Flooded, Gel, AGM

Renogy #ad - 1. 5. 2. 3-phase charging: Bulk, Boost, and Float. 3. 4. Multi-chemistry battery Types: AGM, Gel, Flooded, and Lithium. Battery input and Output Isolation. Compact, sturdy design, built tough for all conditions. Smart protection features: Over-voltage safety, Overheat protection, and Reverse polarity protection.
BrandRenogy #ad
ManufacturerRenogy #ad
Part NumberRNG-DCC
Model20A DC to DC On-board Battery Charger
WarrantyAccessories1-year material warranty

3. KeyLine Chargers


KeyLine Chargers 12V 140 Amp Dual Battery Isolator Voltage Sensitive Relay VSR Pro Dual Battery Kit

KeyLine Chargers #ad - Power wire in, power wire out. It's like having two separate power sources for each battery while only having one alternator! Rugged durability: unlike other isolators on the market, the keyline automatic 140 Amp Dual Battery Isolator is IP65 Certified. Zero voltage drop: forget the traditional diode relays and so-called "solid state" devices that can rob you of almost 2 amps of output power! The KeyLine Dual Battery Isolator is the only unit designed with cutting edge programming to deliver optimum performance - with ZERO sacrifice.

Voltage sensitive Relay VSR cuts in at 13. 3 volts and cuts out at 12. 8 volts to ensure your primary battery is always charged and ready to start your vehicle. Buy with confidence: every 140 amp dual battery isolator is backed by an industry leading 12-month warranty. Great for extreme vibration applications as well. Easy-to-follow directions for the most novice DIYer. What you get: 1 140 amp voltage sensitive relay vsr; 1 20 ft red battery cable; 1 2ft black ground battery cable; 2 positive brass marine type battery terminals; 1 negative brass marine type battery terminal; tinned copper lugs & heat shrink; cable ties; easy-to-follow instructions.

If you are not 100% satisfied with your purchase, simply take advantage of the No Questions Asked, 30-Day Money Back Guarantee!! This international protection rating means that your KeyLine isolator is safe for use even for your off-road needs in dusty, wet and unexpected extreme weather environments. This compact battery isolator was built ultra-small 2.
BrandKeyLine Chargers #ad
ManufacturerKeyLine Chargers #ad
Height2 Inches
Length2.6 Inches
Width2.6 Inches
Part NumberISO-PRO140
WarrantyManufacturer warranty for 1 year from date of purchase.

4. XTPower


Dual USB 5V DC 9V / 12V 2A for Tablets, NDSL, NDS, Digital Cameras, PSP, GoPro, Smart Phones, US Wall Charger Car Charger Included, XTPower MP-10000 External Battery Pack with 10000mAh

XTPower #ad - 4 leds indicate the charging status / capacity. What you get: xtpower power bank mp-10000, car charger, mini usb cable, Micro USB cable, power adapter, 6 Notebook and Netbook Adapter and our worry-free one-year warranty. High quality Lithium Polymer battery ensures reliable charging. Attractive, stylish and robust design - 2 USB high power outputs and one DC 9V/12V output. Automatic shutdown after 30 seconds once the target device is charged or no device is connected.
BrandXTPower #ad
ManufacturerXTPower #ad
Height0.9 Inches
Length4.9 Inches
Width2.99 Inches
Part NumberMP-10000

5. Victron Energy


Victron Energy Orion-Tr Smart 12/12-Volt 18 amp 220-Watt DC-DC Charger, Isolated Bluetooth

Victron Energy #ad - Is suitable for both lead acid and lithium batteries, Unlimited multiple units can be connected in parallel to increase output power. Screw terminals: the screw terminals give the advantage of not needing any special tools for installation.

Victron energy orion-tr smart 12/12-volt 18 amp 220-watt DC-DC charger Isolated is a professional DC to DC adaptive 3-stage charger with built-in Bluetooth. For use in dual battery systems in vehicles or on boats where the alternator and the start battery are used to charge the service battery. Bluetooth smart enabled: the unit can be monitored and programmed via Bluetooth and can be remotely controlled via a remote on/off switch.
BrandVictron Energy #ad
ManufacturerVictron Energy #ad
Part NumberORI121222120

6. Guest


2 Bank, Guest 2711A ChargePro On-Board Battery Charger, 10A/12V, 120V Input

Guest #ad - 2 year warranty. For 12 and 24 volt battery systems requiring 5 amps per battery. Dedicated battery charging, sensing and control per bank. 100% waterproof IP67 and shock resistant. Built-in safety: reverse polarity, over-voltage, over-current, over-temperature and ignition protection.
BrandGuest #ad
ManufacturerMARINCO #ad
Height9 Inches
Length7.5 Inches
Width2.4 Inches
Part Number2711A



Dual battery isolator, vehicle or marine power conversion system 0-50V DC 70A

WUPE #ad - Epoxy resin encapsulation, waterproof, oil-proof and weather-proof, dust-proof, safe ignition. This eliminates the problem of "connector power consumption" in the parallel battery of the modified car, and ensures that the main battery has sufficient Enough electricity is used to start the engine.

This product is used in the power conversion system of automobiles or ships. The main function is to ensure that two group batteries are always isolated from each other, but Can be charged at the same time. The main components of the product are high-power silicon rectifier diodes, external radiators and connection studs.

Note: the isolator is only suitable for systems with negative grounding and parallel batteries with the same nominal voltage. The main and auxiliary circuits are always isolated, and parallel charging is performed simultaneously. Anodized aluminum alloy radiator, with good isolation and good heat dissipation. Built-in high-power automotive-grade diode, reliable load.
BrandWUPE #ad
ManufacturerWUPE #ad
Height3.29 Inches
Length32.52 Inches
Width4.49 Inches
Part NumberBI70A1B2

8. soyond


150W Car Power Inverter Charger DC 12V to 110V AC Converter with 3.1A Dual USB ChargerBlue

soyond #ad - Travel kit: box package with inbuilt protection sponge, space-saving and easy storage, credit card size - 3. 2 x 2. 5 x 1. 5 inches,, with aluminum shell design, extremely portable and lightweight at only 8 oz+.

Durable metal housing provides advanced protection from drops and bumps. What you get : high quality 150w car power inverter, user manual, 18 months warranty and 100% customer service. Integrated very silent cooling fan helps reduce heat and prevents shortages. Multi-protection: built-in fuse to protect your device, short circuiting, overloads, under and over voltage charging, overheating, safe charging design provides protection against, and overcharging.

Dual usb ports can charge most phones and tablets simultaneously Max 3. 1a total output, kindle, tv, ipad, dvd players, breast pump, CPAP machine, game console, lights, while AC outlets great for charging laptop, nebulizer, and other electronic devices. Fast returning policy. Premium 150w car power inverter with 2 usb ports and ac outlets.
Brandsoyond #ad
Manufacturersoyond #ad
Height1.5 Inches
Length3.2 Inches
Width2.5 Inches
Part NumberDPI150-112B



Ryobi P131 One+ Portable Dual Chemistry Lithium Ion or NiCad Vehicle Charger

RYOBI #ad - Mounting capabilities: Keep this charger mounted in larger trucks or cargo vans with the included key hole hanger. This charger will turn off once your car’s battery gets below a certain charge threshold.

Fuse: the 12 volt adaptor contains a 250 Volt, 8 Amp, 5 x 20 mm fuse to protect against unexpected power surges. Protective circuitry: this charger has technology that lets you know when your car’s battery is getting low. Gauge your charge: onboard leds on this system tests batteries for defects, informs you that your battery is charging properly and when the charging is completed. Dual chemistry: this charger, when plugged into a car’s 12 Volt Cigarette Lighter Outlet, can charge both One+ lithium ion batteries or older NiCad models with ease.
BrandRYOBI #ad
ManufacturerRyobi #ad
Height8.5 Inches
Length4 Inches
Width4 Inches
Part NumberP131