Top 10 Onboard Battery Charger – Automotive Replacement Batteries & Accessories

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NOCO Genius GENM2 8 Amp 2-Bank On-Board Battery Charger

NOCO #ad - One of the most advanced battery chargers in its class, 33 CFR 183. An 8 amp 4 amp per bank on-board battery charger for charging and maintaining two 12-volt batteries independently.

Saltwater-tested to combat corrosion. 410, iso 8846, which is certified to UL1236, plus backed by a 5-year . Built-in battery desulfator to recover worn-out batteries. Safely charge all types of lead-acid batteries from 20-120Ah, gel, including wet, AGM, and deep-cycle batteries. Rugged and waterproof construction capable of submersion down to 3-meters and rated IP68 and NEMA 6P. Advanced safety protection featuring spark-proof technology, thermal, plus reverse polarity, ignition, and overcharge protection.
BrandNOCO #ad
ManufacturerNOCO #ad
Height5.5 Inches
Length7.9 Inches
Weight5.8 Pounds
Width2.2 Inches
Part NumberGENM2
Warranty5-Year Limited Warranty

2. Guest


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

Guest #ad - 12v 10 amp 2 bank bank on-board battery charger. In-line fuses for maximum DC wire protection. Dedicated battery charging, sensing and control per bank. 2 year warranty. For all 12 volt flooded and AGM lead acid batteries. Built-in safety: reverse polarity, over-current, over-voltage, over-temperature and ignition protection. 100% waterproof ip67 and shock resistant for all fresh and saltwater applications.
BrandGuest #ad
ManufacturerMARINCO #ad
Height9 Inches
Length7.5 Inches
Weight4.7 Pounds
Width2.4 Inches
Part Number2711A

3. Schumacher


Schumacher SC1300 1.5A 6/12V Fully Automatic Battery Maintainer

Schumacher #ad - Provides 1. 5a to maintain your 6V or 12V battery. Reverse hook-up protection ensures charger will not operate if clamps are reversed. Includes double-sided adhesive and cable tie for mounting. Microprocessor-controlled, safety, with multi-stage charging for added precision, and battery life. Auto voltage detection automatically detects 6 or 12V batteries.
BrandSchumacher #ad
ManufacturerSchumacher #ad
Height5.9 Inches
Length9 Inches
Weight0.7 Pounds
Width2 Inches
Part NumberSC1300
WarrantyNot Applicable



BMK 12V 5A Smart Battery Charger Portable Battery Maintainer with Detachable Alligator Rings Clips Fast Charging Waterproof Trickle Charger for Car Boat Lawn Mower Marine Sealed Lead Acid Battery

BMK BLUEMICKEY #ad - Stop automatically when the battery is fully charged. Just get your automotive car Battery Charger Maintainer with confidence, and contact us if you have any problems about the item when using. Upgraded defective battery detect/fast charging car battery boosterupdated with battery condition diagnose to detect the defective battery before charge. Upgraded with 10a fuse onto ring connectors & multi-purposes deep cycle battery chargerpb/sla/vrla/gel/agm lead acid battery charger tender, motorcycle, electric tools and emergency battery charging, operated with vulcanization function, BMK battery maintainer charger is a great choice for lawn mower, boat, car, electric vehicle, lightweight15.

87oz allows you take it to anywhere, used as Trickle Battery Charger as well. Dc output 13. 8v/5a, ac input 100-240v, it can also charge over 100ah batteries, BMK 12V 5A car battery charger is suitable for charging batteries with 15-100Ah.4-stage smart charging - fully automatic boat battery charger 12v battery charger operated with 4 stages automatic charging process by MCU controller, 25%/50%/75%/100% to indicate quantity of electricity and monitor the whole charging progress.

Upgraded 72-hour safety features/multi safety protections - battery rescue & recoverupdated with 72 hours safety feature to commence anytime the charger is onto protect marginal batteries from over charging. Note: to better tender the battery, please make sure the battery capacity is higher than 15Ah, 1. 5a 60/50hz; with 5a dc output current, just more charging time. Made of high quality abs, ip65 waterproof, featured with constant pulse current Maintenance function to avoid overcharge and discharge; Full-loaded and burn-in test prove its high reliable efficiency, multi-protects of Short Circuit/ OV/ OC/ Overload/ Polarity Reverse, stable performance.
ManufacturerBMK BLUEMICKEY #ad
Part Number4333804069
Warranty24 Months Warranty-Life Time Quality Guarantee



And Battery Desulfator With Temperature Compensation, NOCO GENIUS5, 6V And 12V Battery Charger, 5-Amp Fully-Automatic Smart Charger, Battery Maintainer

NOCO #ad - It's the all-in-one solution - battery charger, battery maintainer, trickle charger, plus battery desulfator. Charge dead batteries - charges batteries as low as 1-volt. Or use the all-new force Mode that allows you to take control and manually begin charging dead batteries down to zero volts.

A fully-automatic, worry-free battery charger for everyday use - 24/7 - with zero overcharge. Beyond maintenance - it's not just a trickle charger, it's an advanced battery maintainer. Do more with genius - designed for 6-volt and 12-volt lead-acid automotive, including flooded, and maintenance-free, gel, AGM, marine, and deep-cycle batteries, plus lithium-ion batteries. It's 34% smaller and delivers 65% more power. Compatible with all types of vehicles - charge and maintain cars, tractors, hot rods, ATVs, motorcycles, trucks, classic cars, boats, lawnmowers, SUVs, and more - you name it.

Restore your battery - automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life. Meet the genius5 - similar to our g3500, just better. Enjoy precision charging - an integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
BrandNOCO #ad
ManufacturerNOCO #ad
Height7.95 Inches
Length4.61 Inches
Width3.43 Inches
Part NumberGENIUS5
Warranty3 year limited

6. Battery Tender


Battery Tender 800 is a SuperSmart Battery Charger that will Constantly Monitor, and Maintain your Battery. It's Encapsulated and Protected from Moisture by an Electrical Insulation, Charge

Battery Tender #ad - The interior is completely encapsulated, vibration, thermally conductive, and moisture by an electrically insulating, protected from shock, flame retardant, synthetic epoxy resin compound. Solid new addition to the Battery Tender family of charger products. It incorporates highly efficient surface mount technology electronic components.

This charger is no larger than a standard computer mouse yet packs 800 milliamps of pure constant current charging power and is listed in the California Appliance Efficiency Database. 18 awg; dc output accessory Length: 1. 5 ft. Includes alligator clips and ring terminals, and is perfect for all outdoor types of ATV's, motorcycles, including lead-acid, or anywhere water is a threat, watercraft, boats, flooded or sealed maintenance free batteries AGM and gel cell. This compact 800 ma battery charger has all the charge characteristics of its cousin the Battery Tender Junior.

All the charging characteristics of the Battery Tender Junior: fully-automated “SuperSmart” charging and maintaining, reverse polarity protection, spark proof, and short circuit protection. It's tough, affordable, and a strong, innovative battery charging solution. The interior is completely encapsulated, thermally conductive, vibration, flame retardant, and moisture by an electrically insulating, protected from shock, UL recognized, synthetic epoxy resin compound. Ac power cord length: 6 ft.
BrandBattery Tender #ad
ManufacturerBattery Tender #ad
Height10 Inches
Length10 Inches
Weight0.12 Pounds
Width4 Inches
Part Number022-0150
WarrantyManufacturer Warranty

7. Renogy


AGM, Gel, and Lithium Using Multi-Stage Charging, Renogy 40A 40A DC to DC Battery Charger 40A for Flooded

Renogy #ad - Increases run time of loads, such as fridges and lights; Overcomes voltage drop caused by long cable runs; Prolongs Battery Life. Multi-chemistry battery types flooded, Boost, Gel, AGM, and Lithium ; 3-phase Charging Bulk, and Float. Smart protection features Battery Isolation, Overheat protection, Over-voltage safety, and Reverse polarity protection. Built tough for all conditions; Able to charge an auxiliary battery to 100% state of charge. 1-year material. Overcomes voltage drop caused by long cable runs.
BrandRenogy #ad
ManufacturerRenogy #ad
Part NumberRNG-DCC
Warrantyaccessories1-year material warranty

8. ProMariner


ProMariner Multi 43008 Battery Charger Prosport 8 Amp

ProMariner #ad - System ok and battery bank trouble status indicators: Advanced technology eliminates time consuming troubleshooting by clearly indicating system and battery connections are OK or if a fault is present on a specific battery bank. Storage recondition mode: during short or long-term storage, Pros port automatically reconditions all batteries on board once a month for maximum battery life and performance.

Digital multi-stage performance charging: Fully charge and extend the life of your batteries - automatically charges, conditions and safely maintains all batteries on board for maximum time on the water. This significantly reduces AC power consumption, lowers operating costs and maximizes reserve power performance.

Energy saver mode: after fully charging and conditioning batteries, Pros port's Energy Saver Mode will monitor and Auto Maintain batteries only when needed, maintaining a full state of charge. Primary digital technology: microprocessor and software controlled pulse charging technology delivering a 40 percent lighter design than the previous generation of epoxy filled chargers, cooler charger operation and faster charging.
BrandProMariner #ad
ManufacturerMARINCO #ad
Height2.75 Inches
Length8.38 Inches
Weight3 Pounds
Width7.25 Inches
Part Number43008



LST Automatic Trickle Charger Maintainer 12V Smart Deep Cycle Battery Charger for Boat Marine Trolling Motor Automotive Lawn Mower Tractor RV SLA ATV AGM GEL CELL WET& FLOODED Lead Acid Battery

LEICESTERCN #ad - Input 100-240v, the 12v trickle chargers provide visual feedback of diagnostic information and battery capacity accordingly, ultra-compact, portable and lightweight with the mounting holes, easy to carry the boat battery maintenance charger everywhere. Multi-protection - updated with 72 hours safety feature to commence anytime the charger is onto protect marginal batteries from over charging, Overheat; Spark proof during lead connection; Water and dust resistant battery tender charger, Short Circuit, Overload, LST smart car battery charger ensure ultimate safety protect against Reverse Polarity, Over Charge/Discharge, Over Voltage/Current, full-loaded and burn-in test proves its stable performance and high reliability.

Automatic charge and maintain - 4-stage charging program initialization, absorption, Bulk Charge, LST Trolling Motor battery charger monitor the whole charging process, Float allows for optimization of battery power, automatically switches to float mode after fully charging the battery by MCU controlled; LST battery trickle charger will recover batteries more effectively and extend the battery life.11

100% satisfactory trickle charger - 12 volt battery maintainer charger features with detachable alligator, ring adapters; LST automotive battery charger maintainer offer lifetime quality assurance & 12-month refund & timely 24/7 after-sale services, just get lst motorcycle tender charger with confidence. Wide application - charge fully drained 12v pb/sla/gel/agm/vrla/sealed lead-acid batteries and WET/FLOODED for maintenance, powers-port, electric vehicle, camper, automobile, it’s trickle battery charger for boat, watercraft, lawn tractor, automotive, trolling motor, motorcycle, lawn mower, car, back-up generator. Intuitive led indicator - updated with defective battery recognition function, efficiently prolong the lifetime of the battery.
ManufacturerLEICESTERCN #ad
Part NumberEPA1020

10. ProMariner


Promariner Prosport 8 Gen 3 Heavy Duty On-Board Marine Battery Charger, 8 Amp, 2 Bank

ProMariner #ad - Built-in quality & Safety. Digital led display & Battery Type Selector. Prosport 8 gen 3 heavy duty recreational Series On-Board Marine Battery Charger - 8 Amp - 2 Bank. Storage Recondition Mode. Distributed-on-Demand Technology. Pre-wired for easy installation. Prosport is 100% waterproof and shockproof, weighing 40% lighter. System ok & battery bank trouble status Indicators.
BrandProMariner #ad
ManufacturerProMariner #ad
Part NumberPROMA-43008