Best KeyLine Chargers Battery Chargers in 2022

# Image Product Check Price
1 Battery Tender Junior 12V Charger and Maintainer: Automatic 12V Powersports Battery Charger and Maintainer for Motorcycle, ATVs, and More - Smart 12 Volt, 750mA Battery Float Chargers - 021-0123 Battery Tender Junior 12V Charger and Maintainer: Automatic 12V Powersports Battery Charger and Maintainer for Motorcycle, ATVs, and More - Smart 12 Volt, 750mA Battery Float Chargers - 021-0123 View
2 MOTOPOWER MP00205A 12V 800mA Automatic Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator MOTOPOWER MP00205A 12V 800mA Automatic Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator View
3 Battery Tender Plus 12V Battery Charger and Maintainer: Selectable 6V, 1.25 Amp, 12V Battery Charger and Maintainer for Powersports - Switchable 6 and 12V Battery Float Charger - 022-0211-DL-WH Battery Tender Plus 12V Battery Charger and Maintainer: Selectable 6V, 1.25 Amp, 12V Battery Charger and Maintainer for Powersports - Switchable 6 and 12V Battery Float Charger - 022-0211-DL-WH View
4 KeyLine Chargers Fused O Ring Terminal SAE Connector with Black Universal 18 AWG 2-Pin Quick Connect/Disconnect Plug KeyLine Chargers Fused O Ring Terminal SAE Connector with Black Universal 18 AWG 2-Pin Quick Connect/Disconnect Plug View
5 MaySpare Dual Battery Isolator Kit 12V 140Amp Voltage Sensitive Relay VSR Double Battery Automatic Charger & Wiring Cable Kit MaySpare Dual Battery Isolator Kit 12V 140Amp Voltage Sensitive Relay VSR Double Battery Automatic Charger & Wiring Cable Kit View
6 Foval Automatic Trickle Battery Charger 12V 1000mA Smart Battery Charger Foval Automatic Trickle Battery Charger 12V 1000mA Smart Battery Charger View
7 NOCO GENIUS2, 2-Amp Fully-Automatic Smart Charger, 6V and 12V Portable Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator with Temperature Compensation NOCO GENIUS2, 2-Amp Fully-Automatic Smart Charger, 6V and 12V Portable Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator with Temperature Compensation View
8 IEIK 12V 5 Amp Automotive Smart Battery Charger Maintainer for Car, Motorcycle, RV, SUV, Lawn Mower, Boat, RV, SUV, ATV and More IEIK 12V 5 Amp Automotive Smart Battery Charger Maintainer for Car, Motorcycle, RV, SUV, Lawn Mower, Boat, RV, SUV, ATV and More View
9 KeyLine Chargers 12V 140 Amp Dual Battery Isolator Voltage Sensitive Relay (VSR) Pro Dual Battery Kit KeyLine Chargers 12V 140 Amp Dual Battery Isolator Voltage Sensitive Relay (VSR) Pro Dual Battery Kit View
10 NOCO GENIUS1, 1-Amp Fully-Automatic Smart Charger, 6V and 12V Portable Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator with Temperature Compensation NOCO GENIUS1, 1-Amp Fully-Automatic Smart Charger, 6V and 12V Portable Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator with Temperature Compensation View

KeyLine Chargers Vs Schumacher Electric, Blue Sea Systems, and Optima Digital 400

If you are considering investing in an aftermarket battery charger for your car, you may want to check out some of the best models from KeyLine Chargers. We also look at the Schumacher Electric, Blue Sea Systems, and Optima Digital 400 chargers. These will help you determine which charger is best for your vehicle. Read on to find out more about each of these products. We also recommend using them for your daily driving needs.

KeyLine Chargers

If you own a motorcycle, you know the importance of a good battery charger. KeyLine Chargers battery chargers are designed for this purpose. The Isolator VSR has an amperage output of 140 amps and comes with a 20 foot cable and two foot battery grounding cable. KeyLine Chargers battery chargers are also compatible with various electronic devices, including motorcycles, scooters, and ATVs.

The Isolator is an important part of any motorcycle or RV battery charger. It features a voltage-sensitive relay that cuts in at 13.3 volts and cuts out at 12.8 volts. This way, the primary battery always gets a full charge. Lastly, this IP65-certified battery is very compact, but it's incredibly powerful and works well with virtually any dual battery system. The price tag is pretty steep, though, but it's well worth the extra security.

Schumacher Electric

The SC1455 is a versatile and reliable manual battery charger made by Schumacher Electric. This charger provides 240 volts at 16 amps, a NEMA 6-20P outlet, and a powerful 30 A boost that restores severely discharged batteries to full charge. Its safety features include overcurrent and overvoltage protection. It is also DOE and UL ULC certified. For a full review of the SC1455, please visit the Schumacher Electric website.

The Mini Pro battery charger is easy to use and features an LCD display. It also detects electrical surges and reverse polarity. An onboard control unit keeps temperatures down and offers over-charging protection to ensure the safety of your batteries. You'll never be left in the dark about the charge rate again with the SE-4022. The Mini Pro battery charger is small but packs serious features. This is the perfect charger for anyone who needs to recharge their batteries frequently.

Blue Sea Systems

Blue Sea Systems offers battery chargers that share the charge between two batteries. These units are more efficient than a single battery isolator. For instance, a 12/24 Volt SC 120 Amp Automatic Charging Relay separates batteries during engine cranking up and combines them during charging. This device simplifies switching and isolates the house or engine circuit from each battery. The Add-A-Battery kit is another option, and has a minor automotive slant. You can even get a start battery for emergency starting.

Besides its superior performance, Blue Sea Systems KeyLine Battery Chargers offer a one-year warranty. It is also available with an isolator, which allows you to control the amount of amperage that the batteries output. This way, you can keep sensitive electronic devices safe while traveling with your boat. Moreover, the KeyLine Chargers Isolator allows you to monitor the charge status of your batteries at any time.

Optima Digital 400

The KeyLine Optima Digital 400 battery charge uses an internal microprocessor and software to monitor the condition of the battery and provide the proper amount of charge for optimal performance. The charger does not overcharge batteries, thereby extending their life. Before charging, the charger analyzes the state of charge and quality of the battery connections. The charger uses two categorized charging methods, which are soft-ramp charging for deep-discharged batteries and fast-charge bulk mode for moderately discharged batteries. This ensures a complete charge and maintains them at a full state of charge.

Designed to extend the life and performance of lead acid batteries, the Optima Digital 400 is a battery maintainer and charger for all 12-volt lead-acid batteries, including flooded and gel-cell types. It has advanced settings to ensure maximum performance and maximize the life of OPTIMA batteries. In addition to the many battery charging modes, the OPTIMA Digital 400 also includes built-in faults and status messages, making it easy to monitor the battery's health before charging.

Blue Sea Systems Add-A-Battery Kit

The Blue Sea Systems Add-A-BatterY Kit for KeyLine Chargers provides the extra boost you need to keep your batteries charged and protected. The Isolator includes a mounting bracket and surge and over current protection. It's also IP67 waterproof, so you can use it in places where you'd rather not risk damaging sensitive electronics. Both of these KeyLine Chargers are suited for multiple battery banks.

This kit features an Automatic Charging Relay and Dual Circuit Plus(tm) Battery Switch, which simplifies battery switching. This feature also eliminates the need to constantly switch batteries, as the Add-A-Battery automatically combines the two batteries while charging. The switch automatically turns on both batteries when you arrive and off when you leave. It even allows you to use both batteries at the same time.

The Automatic Charging Relay and Mini Add-A-Battery Plus simplify switching between house and engine batteries. The Automatic Charging Relay automatically switches between house and engine batteries to ensure emergency starting. Both the Automatic Charging Relay and the E-series dual circuit plus battery switch share the charge between the two batteries better than a battery isolator. It's also ignition protected and installs in the engine room.


Andrew James

President and CTO of Lithium Battery Engineering, which provides consulting services, does SBIRs, commercial R&D, design and prototype manufacturing. Clients include lithium ion cell and battery manufacturing companies, component producers, battery end users and investment companies. Technical experience includes lithium ion, lithium polymer, lithium metal, chemical super capacitors, coating, cell design and manufacturing and battery design and assembly. Experienced in strategic planning, marketing and market development, financial analysis and manufacturing, including plant design and construction, start-up, process scale-up and operation. Working to commercialize Freya Energy's TAZZD safety separator which protects lithium ion cells from overcharge, overheating and physical damage, Battelle's conformal/structural celland a higher energy density cell through the synergistic combination of commercial materials. Extensive industrial experience ranging from NASA and venture companies to smokestack industries. Proven expertise in general management, finance, sales/marketing, contracts and investor relations as well as scientific, technical and manufacturing areas. Demonstrated managerial capability, problem solver and effective motivator based on respect. Team player, manage by leading, coaching and teaching rather than directing. International experience.

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