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Reliable qualitythe compact and robust design makes it suitable for all conditions.
Smart 3-stage charging the dc-dc battery charger will charge your house batteries from the starter battery by 3-stage charging Bulk, and Float, Boost, to make sure it optimally and automatically charge to 100%. Ce certification.

P>. P>reliable quality the compact and robust design makes it suitable for all conditions. P>protect your batteries the dc-dc battery charger is capable of identifying whether the generator is started, to prevent over-discharge of the starting battery and protect the generator. P>.

Saves your 12v battery agm, starter, std, gel, deep Cycle when no other charger will work. Optimate is recommended by honda, kTM and Husqvarna and global battery manufacturers Antigravity, kawasaki, Yamaha, Super-B and Earth-X.


Optimized performance: besides effectively pulling power from solar panel or vehicle’s alternator to charge your auxiliary battery, this charger has incorporated a built-in MPPT that can increase solar panel’s efficiency by up to 30%! Efficient charging: this charger integrates standby, pre-charge, constant voltage charging, constant current charging, full charge and re-charge stages, and upgraded algorithm selects the optimum mode and revives your discharged battery.
Solid protection: over-chargeleave your device connected indefinitely, solar input overload, short circuit, input/output reverse polarity protection are incorporated, thermal load, over-temperature, as well as quality wires and aluminum housing. Re-selection ready: this atem power dc to dc charger, calcium, Gel, LiON batteries, AGM, compatible with lead Acid, allows you to re-select the battery during charging by long pressing “POWER”.

Dual input: priority to charge from the main battery, and then from solar panel, no relay or switching required. Superior design: heavy duty aluminum case and mounting brackets contributes to resist harsh conditions and high quality wires ensure long last durability.
Application: this 20a dc to dc battery charger is sophisticated multi stage charger, utilizing switch mode and fully automatic computerized control, designed to charge most 12V AGM/Gel, Lead Acid LiON and Calcium batteries. Battery-friendly: use pulse charging algorithm, which is designed to select the optimum charge mode and revive your discharged battery. Its power-off memory function ensures that it will keep the battery type until it is changed.

5v). Acc ignitioncan be connected to acc to ignition or switch. Multi-chemistry battery TypesAGM, Gel, Flooded, and Lithium. Smart chargingthe dc-dc battery charger will charge your house batteries from the starter battery by Bulk and Float charging to make sure it optimally and automatically charge to 100%.


Smart 3-stage chargingour intelligent 3-stage charging Bulk, absorption, and Float uses a high speed microcontroller and a proprietary charging algorithm to deliver a sophisticated 3 stage charging process.
Mppt maximizes the power generated from your solar panels to the auxiliary battery. Automatic safety features built-in Offers Spark-Free, Reverse Connection, Over and Under Voltage and Over Temperature Protection.
1. Renogy
#ad
Renogy 12V 40A DC to DC On-Board Battery Charger for Flooded, 40A, Yachts, Commercial Vehicles, Boats, and Lithium, Using Multi-Stage Charging in RVs, AGM, Gel
#adRenogy #ad - Compatible multiple battery types compatible with a multitude of alternator types, Flooded, the DC-DC battery charger offers correct charging for AGM, Gel, and Lithium batteries. Various protections for ultra safety offers over-voltage Protection, Over-temperature Protection, and Reverse Polarity Protection to ensure the operation safety.Reliable qualitythe compact and robust design makes it suitable for all conditions.
More information #ad
It also isolates the input and output to prevent voltage transmission errors and interfere with house battery charging. Protect your starter batterythe dc-dc battery charger is capable of identifying whether the generator is started, to prevent over-discharge of the starting battery and protect the generator. Smart 3-stage charging the dc-dc battery charger will charge your house batteries from the starter battery by 3-stage charging Bulk, and Float, Boost, to make sure it optimally and automatically charge to 100%. Ce certification.
Brand | Renogy #ad |
Manufacturer | Renogy #ad |
Height | 2.7 Inches |
Length | 6.9 Inches |
Weight | 4 Pounds |
Width | 10.3 Inches |
Part Number | RNG-DCC |
Model | 40A |
Warranty | accessories1-year material warranty |
More information #ad
2. leaptrend
#ad
Leaptrend 40A DC to DC in-Vehicle Battery Charger,12V 40amp DC Chargers,for RV Flooded Gel AGM Lithium Battery
#adleaptrend #ad - P>intelligent protection offers over-voltage protection, over-temperature protection, and Reverse Polarity Protection to ensure the operation safety. P>all in chargecompatible with a multitude of alternator types, std, gel, boat, lithium-iron phosphate and Lithium-iron batteries, such as Flooded, the DC-DC battery charger offers correct charging for in-vehicle and on-board back up batteries, pop up trailer, which will enjoy your outdoor off grid camping on RV, yachts, Sealed, travel trailer, AGM, tow vehicle, van, truck, etc.More information #ad
P>. It also isolates the input and output to prevent voltage transmission errors and interfere with house battery charging. P>. Ce, ukca certificated. P>. P>self-regulated charging mode the dc-dc battery charger will charge your house batteries from the starter battery by 3-stage charging Bulk, and Float, Asorption, to make sure it optimally and automatically charge to 100%. P>. P>reliable quality the compact and robust design makes it suitable for all conditions. P>protect your batteries the dc-dc battery charger is capable of identifying whether the generator is started, to prevent over-discharge of the starting battery and protect the generator. P>.
Brand | leaptrend #ad |
Manufacturer | leaptrend #ad |
Height | 3.11 Inches |
Length | 8.38 Inches |
Width | 7.4 Inches |
Part Number | altair40a |
Model | altair40a |
Warranty | 24 months |
More information #ad
3. Tecmate
#ad
6-Step 12V/12.8V 2A Sealed DC to DC Battery Saving Charger & maintainer, TM-500v3, Tecmate Optimate DC to DC
#adTecmate #ad - Continuous charging if healthy, stops and warns if faulty. Connect and forget, no more battery problems. If optimate can't save it, nothing will.Saves your 12v battery agm, starter, std, gel, deep Cycle when no other charger will work. Optimate is recommended by honda, kTM and Husqvarna and global battery manufacturers Antigravity, kawasaki, Yamaha, Super-B and Earth-X.
More information #ad
Fully sealed case to protect against spillage and light rain. Bms battery management system wake up mode safely wakes battery with integrated BMS protection out of sleep mode. Tests automatically and indicates if there is a battery problem. Charge both lead-acid and Lithium batteries from another 12V battery! Safe to use with Lithium batteries.Brand | Tecmate #ad |
Manufacturer | TecMATE #ad |
Height | 1.97 Inches |
Length | 6.69 Inches |
Weight | 1.65 Pounds |
Width | 2.56 Inches |
Part Number | TM-500v3 |
Model | TM-500v3 |
Warranty | 3 Years |
More information #ad
4. Tecmate
#ad
Tecmate Optimate DC-DC, 6-Step 12V/12.8V 2A Sealed DC to DC Battery Saving Charger & maintainer, TM-500
#adTecmate #ad - Fully automatic - connect and forget, no more battery problems. Continuous charging if healthy, stops and warns if faulty. Intelligent wake up mode - bms battery Management System wake up mode safely wakes battery with integrated BMS protection out of sleep mode.More information #ad
Get your battery to work - saves your 12V battery AGM, GEL, STD, Starter, Deep Cycle. Off-grid charging - charge both lead-acid and Lithium batteries from another 12V battery! Lithium friendly - SAFE to use with Lithium batteries.Brand | Tecmate #ad |
Manufacturer | OptiMate #ad |
Height | 2.56 Inches |
Length | 6.57 Inches |
Weight | 1.32 Pounds |
Width | 1.81 Inches |
Part Number | TM-500 |
Model | TM-500 |
Warranty | 3 Years |
More information #ad
5. ATEM POWER
#ad
Calcium, Multiple Protection Design On-Board Charger, Gel, Lion Batteries, AGM, ATEM POWER 12V 40A DC to DC Battery Charger with Solar Input MPPT Controller for Lead Acid
#adATEM POWER #ad - Convenient & versatility: it is ideal for campervans, RVs, caravans, 4wDs, campers, commercial vehicles and boats, trailers, trucks, and the LED indicator shows real-time charging stage and memory function makes your charging more convenient.Optimized performance: besides effectively pulling power from solar panel or vehicle’s alternator to charge your auxiliary battery, this charger has incorporated a built-in MPPT that can increase solar panel’s efficiency by up to 30%! Efficient charging: this charger integrates standby, pre-charge, constant voltage charging, constant current charging, full charge and re-charge stages, and upgraded algorithm selects the optimum mode and revives your discharged battery.
More information #ad
Solid protection: over-chargeleave your device connected indefinitely, solar input overload, short circuit, input/output reverse polarity protection are incorporated, thermal load, over-temperature, as well as quality wires and aluminum housing. Re-selection ready: this atem power dc to dc charger, calcium, Gel, LiON batteries, AGM, compatible with lead Acid, allows you to re-select the battery during charging by long pressing “POWER”.
Brand | ATEM POWER #ad |
Manufacturer | ATEM POWER #ad |
Height | 1.73 Inches |
Length | 19.3 Inches |
Weight | 3 Pounds |
Width | 5.59 Inches |
Part Number | VABG008A-UFA |
More information #ad
6. Kanruis
#ad
VRLA Battery with Multi-Protections Multi-Stage Charging, Kanruis 12V 20A DC to DC On-Board Battery Charger for AGM, Calcium, LiFePO4, Gel
#adKanruis #ad - Microchip monitoring and control, fully automatic high frequency multi-stage charging. Safe and reliable: the charger integrates over charging, thermal overload, over temperature, short circuit, solar input overload and input/output reverse polarity protection. Compatible with smart alternator, which is suitable for modern vehicle, the ACC wire can be wired to the ignition to adjust voltage cut off, trailers and caravans.Dual input: priority to charge from the main battery, and then from solar panel, no relay or switching required. Superior design: heavy duty aluminum case and mounting brackets contributes to resist harsh conditions and high quality wires ensure long last durability.
More information #ad
The built-in mppt regulator help to harvest more energy from the solar panel. And multi-stage charging integrates bulk charge, absorption and constant/float voltage to improve efficiency and extend battery lifespan. Application: this 20a dc to dc battery charger is sophisticated multi stage charger, utilizing switch mode and fully automatic computerized control, designed to charge most 12V AGM/Gel, Lead Acid LiON and Calcium batteries. Battery-friendly: use pulse charging algorithm, which is designed to select the optimum charge mode and revive your discharged battery. Its power-off memory function ensures that it will keep the battery type until it is changed.
Brand | Kanruis #ad |
Manufacturer | Kanruis #ad |
Part Number | VABG004-ORD |
More information #ad
7. dkplnt
#ad
AGM, Gel, and Lithium, dkplnt 12V 20A DC to DC On-Board Battery Charger 12V to 14.5V Converter for Flooded, Commercial Vehicles, Boats, Smart Charging in RVs, Yachts with Acc Ignition Control
#addkplnt #ad - Output voltagestable output voltage is 14. 5vdc (during the charging process, the charging voltage of the battery will gradually increase until it reaches 14.5v). Acc ignitioncan be connected to acc to ignition or switch. Multi-chemistry battery TypesAGM, Gel, Flooded, and Lithium. Smart chargingthe dc-dc battery charger will charge your house batteries from the starter battery by Bulk and Float charging to make sure it optimally and automatically charge to 100%.
More information #ad
The dc-dc battery charger is capable of identifying whether the generator is started, to prevent over-discharge of the starting battery and protect the generator. Input voltage range12vdc-16vdc(can be connected to 12V battery/auto generator).Brand | dkplnt #ad |
Manufacturer | dkplnt #ad |
Part Number | 12V to 14.5V Converter |
More information #ad
8. KISAE Technology
#ad
50A, KISAE Technology DMT1250 Abso DC-DC Charger
#adKISAE Technology #ad - Multi-stage battery charging ensuring batteries are charged to manufacturers specifications. Programmable settings for customizing to your battery. Microprocessor controlled multi-stage charging algorithms for gel, flooded, AGM and lithium batteries.More information #ad
Ideal for charging batteries when household power is unavailable. Charge your house battery from the engine alternator or from a solar panel.Brand | KISAE Technology #ad |
Manufacturer | KISAE Technology #ad |
Part Number | DMT1250 |
Model | DMT1250 |
More information #ad
9. Wagan
#ad
Wagan EL7410 12V 25A DC to DC Battery Charger with Solar Input MPPT Controller for SLA, Gel, Vehicles, Using Multi-Stage Charging in RVs, AGM, Calcium and Lithium, Boats and Yachts, Flooded
#adWagan #ad - Compatible multiple battery types our wagan dc-DC battery charger offers correct charging for SLA, Flooded, AGM, Gel, Calcium and Lithium batteries. Mppt solar charge controllerwagan dc to dc charger utilizes sophisticated MPPT Maximum Power Point Tracking solar regulator technology.Smart 3-stage chargingour intelligent 3-stage charging Bulk, absorption, and Float uses a high speed microcontroller and a proprietary charging algorithm to deliver a sophisticated 3 stage charging process.
More information #ad
Standard and smart alternator systems wagan DC-DC charger can be used with standard and Smart Alternator systems and is perfect for use with solar systems and those choosing not to utilize solar charging. Mppt maximizes the power generated from your solar panels to the auxiliary battery. Automatic safety features built-in Offers Spark-Free, Reverse Connection, Over and Under Voltage and Over Temperature Protection.
Brand | Wagan #ad |
Manufacturer | Wagan #ad |
Height | 5.8 Inches |
Length | 1.7 Inches |
Width | 5.1 Inches |
Part Number | EL7410 |
Model | EL7410 |
Warranty | 1 Year Limited Warranty |
More information #ad