I know you know the frustration of trying to wake a flat battery especially when you had grounded your car through winter or summer.
A jump starter might help you but the fact is that you might have to replace a dead battery.
Ensure that you never experience this again by getting one of the best battery chargers cum maintainers that will ensure that your battery is always ready when you are.
The best battery tender for car storage will enhance your auto battery’s performance and save you the cost of frequent battery replacement.
We tested several battery tender brands so that you don’t have to waste your time and bucks on helpless trial and error.
As compensation, we’ll earn a small commission when you click on the links here and better your life by purchasing one of these devices. This comes at absolutely no extra cost to you.
NOCO Store is known for some of the safest and most advanced battery chargers and maintainers, and they now have a newer model that is a work of genius.
GENIUS5 is smaller than previous models, yet it delivers 65% more power than the G3500 battery charger. It is also an all-in-one battery solution: it is a battery charger, maintainer, trickle charger, and a battery desulfator.
GENIUS5 is designed to charge 6 volt and 12-volt lead-acid automobile batteries, marine batteries, and deep-cycle batteries of all types; AGM, GEL, flooded, maintenance-free batteries, as well as lithium-ion batteries.
Overcharging your car battery will destroy it sooner than you can believe and the ambient heat exacerbates this degeneration. Undercharging the battery also leads to premature failure. Genius Smart Charger has an integrated thermal sensor that ensures precision charging thus preventing both overcharging and undercharging.
If you have a dead car battery, your vehicle’s alternator won’t recharge it. NOCO GENIUS enables you to recharge a dead battery from as low as 0 volts.
It also restores a defective battery. It automatically detects sulfation and acid stratification and reverses them so that your engine can recoup a stronger start and the battery life is extended.
Unlike the car alternator with which you can only guess the battery charge level, the NOCO Smart Charger has an LED battery charge level indicator.
It’s compatible with all vehicle types and any mobile thing that has a battery; motorcycles, ATVs, lawnmowers, SUVs, trucks, boats, and so on.
Something important to note is that the best battery tender you select must have Amp-hours (Ah) rating equal to or higher than your battery. If your car battery is 100Ah, then only a Genius 5 (120Ah) will charge it fully. If it’s 38Ah, then you can use Genius 2 (40Ah). To see the NOCO Genius smart charger power ratings, visit this page on Amazon.
Just like the battery tender enhances a car battery’s performance and prolongs its life, a rain guard or wind deflector preserves the upholstery by deflecting rain and other elements. Here is our review of the best rain guards for cars in 2022.
Most car battery chargers and tenders tell you to “connect it and forget it”. What if something wrong happens? Deltran Best Battery Tender for Car 75 Amp has an extra feature that sends you alerts to your mobile phone whenever the charger or battery needs your attention. So it’s a “Connect it. Forget it. Get Alerts.” system.
Integrated wireless connectivity (Wi-Fi) lets you connect to your charger from any iOS or Android mobile device over the internet, through which you can get alerts and even control the charger.
And if that is not enough, you can view your battery over the internet. These are the possible alerts that can you can get about your battery;
Battery is sulphated and is not holding charge as it should
The vehicle light was left on and is draining the battery
Average voltage is low over a period of time
Battery needs to be checked for effectiveness
Deltran Battery Tender Plus is an all-in-one power horse. You can use it to boost your car battery, to jump-start it, and even to maintain the charge at an optimal level.
This tool is equipped with four modes of charging- 1.25 Amp charging, 20 Amp boost, 75 Amp engine start assist, and power supply – that make it the ultimate charging solution for any 12-volt battery.
It’s also compatible with regular lead-acid batteries, AGM, and lithium-ion batteries to fit a variety of automotive batteries.
Safety and security are guaranteed when you are using this best battery tender for car storage. It’s spark-proof, and it automatically detects a reversed polarity connection to ensure correct locked-in termination before it starts powering the battery.
Many motorists ask if they can use a battery charger to start their smaller engine cars. But a 2Amp charger cannot supply the amount of current required to start a vehicle and thus car battery chargers that can also start an engine are hard to find.
The STANLEY BC15BS bench battery charger comes to the rescue. If your small car’s battery is dead and you want to start the vehicle in a flash, STANLEY’s engine start function will do the work. The patented engine start can go up to 50A, which will start your small car in 90 seconds.
It also provides fully automatic high-frequency charging delivered in 3 stages – fast charge (constant current), top off (constant voltage), and trickle charge (maintenance mode) – that enhance battery life and performance.
STANLEY BC15BS is the ideal charger for vehicles, ATVS, motorhomes, lawn tractors, boats, snowmobiles, and jet skis that have been grounded for long. It charges and maintains Wet cell, AGM, and GEL 12 volt automotive or marine batteries.
An LCD screen displays the battery charge level as well as the battery’s diagnostic information.
The battery charger also has a patented alternator check feature that lets you monitor the battery voltage under load and see if the alternator is maintaining the correct charge level.
A built-in cord, cable wrap, and clamp holder make this device easy to use and store.
BLACK+DECKER BC2WBD is a waterproof battery charger and maintainer that lets you charge your battery even when you are out there exposed to the elements, such as rain or water.
The BC2BDW is a fully automatic device that takes the worry out of charging. It automatically stops charging when the battery is topped off and it switches to the float mode to maintain the full charge.
And it’s also a high-frequency battery maintainer, which means that you can leave the tender connected to your battery for any length of time, ensuring the battery is fully charged at all times.
It charges 12V AGM, gel, and wet cell batteries in any motorized thing- RVs, antique and classic cars, specialty vehicles, watercraft, and so on.
The device offers 3 different means of connecting to the battery and they’re all exceptionally easy and convenient to use. Battery clamps allow you to connect the charger to the battery outside the car, O-rings enable you to connect to hard-to-reach terminals while the DC plug is your choice if you prefer to charge or maintain your battery from the inside of your vehicle.
It also features built-in protection against overcharging, short-circuiting, and reverse polarity connection. The housing is IPX7-rated, a material that is waterproof even to direct water, rain, and oil.
A hanging hook and a magnetic backing allow you to position the charger anywhere, for convenient and hands-free operation.
The COVID pandemic has made many of us ground our vehicles and if you have all of a sudden found a flat battery, then you need Deltran Battery Tender Plus to get it back up.
The 1.25 amp charger will fully charge your small engine vehicle battery and then switch to float mode to maintain the proper voltage level without undercharging or overcharging the battery.
And you don’t have to wait for two days for your battery to be fully charged. It charges as fast or faster than a 3Amp charger. Some users have charged their batteries to 100% in 3 hours; others in 5 hours, depending on the battery’s capacity.
It is a compact, low maintenance design that you can use even in small storage spaces.
Battery Tender Plus maintainer is the ideal solution when you want to store your car for long. It will provide and maintain your auto battery charge at an optimal level such that it won’t fail you when you want to drive the car later on.
The battery tender is compatible with lead-acid, wet-cell/flooded, and absorbent glass mat and gel cell maintenance-free batteries.
A two-color LED light indicator lets you monitor the battery power level. If the battery voltage drops too low under load, the ISM™ Adaptive Charging and Maintenance technology will resume the charger’s full power output.
Just like the Deltran Battery Tender Plus 75 Amp smart charger, safety and security are guaranteed when you are using this charger and maintainer. It’s spark-proof, and it automatically detects a reversed polarity connection to ensure the correct locked-in connection before it starts powering the battery.
A fused ring terminal harness enables you to connect the device to hard-to-reach terminals. It still has fused alligator clips as an alternative when the battery terminals are easy to reach. They are quick to connect and disconnect, adding to the device’s safety of use.
Schumacher SP1297 smart charger is a microprocessor-controlled multi-stage charger that ensures precise charging, safety, and float mode optimal power maintenance that extends battery life.
It’s a “connect it and forget it” charger. It stops charging when your battery is fully charging and resumes charging when the battery is discharged.
It is a 3A charger and maintainer great for car, motorcycle, and marine batteries.
Its clamp and ring terminal adapters make it easy to connect and disconnect even in hard to reach areas, whereas the hook attachment is convenient for hanging the unit outside of your work area.
Schumacher charger also has a reverse hook-up protection feature which prevents the charger from charging the battery if you have reversed the clamps.
Step-by-step instructions for properly charging your battery are provided via a digital message.
If you need a connect-it-and-forget-it system that can simultaneously charge and maintain up to four 12V batteries, then Deltran 4 Bank charger is what you need.
Cutting edge Battery Management System technology automates the charging of your Powersports batteries. It fully charges the battery and then goes into float mode to maintain the optimal charge.
Bank Battery Tender Charging Station is a constant current charger that can simultaneously charge and maintain up to four 6V or 12V batteries for your car, ATV, UTV, scooter, PWC, motorcycle, and many more automobiles.
A two-color LED light indicator lets you monitor the battery power level. If the battery voltage drops too low under load, the ISM™ Adaptive Charging and Maintenance technology will resume the charger’s full power output.
Just like Deltran battery tenders, safety and security are guaranteed when you are using this charger and maintainer. It’s spark-proof, and it automatically detects reversed polarity termination to ensure the correct locked-in connection before it starts powering the battery.
This is a 12V 2A trickle battery charger suitable for 12V lead-acid and 12V lithium (LiFePO4) batteries.
Ultimate safety is guaranteed through multi-level safety features; spark proofing, reverse polarity protection, over-charging, short-circuiting, dust resistance, and over-temperature protection. It also detects and jump-starts a dead battery when you’ve stored your car for long.
It is the perfect charger for all types of lead-acid batteries, flooded, absorbent glass mat, and gel cell maintenance-free batteries, as well as 12V-Lithium (LiFePO4) rated up to 85Ah. It safely charges and maintains batteries for motorcycles, cars, ATVs, RVs, boats and marines, lawnmowers, Powersports, etc.
The best battery tender for car adopts a 4-stage charging process to optimize battery life and performance. The first stage is initialization where the charger desulfates the battery with a 17V pulse. The second stage is bulk charging where the battery receives the bulk of its capacity charge (75-80%). The third stage is the absorption stage where the battery charges up to 100% at a constant voltage. The charger’s current tapers off after the battery are fully charged. The last stage is the float mode, where the charger maintains a constant voltage to the battery, thus maintaining the charge at 100%.
A 2-color LED light indicates the battery charge level, so it’s easy to monitor.
Sailnovo Smart Charger is your choice if you need a compact but powerful battery charger and maintainer that can fit anywhere in your car. It measures only 9.57 x 5.98 x 2.74 inches and weighs only 1.38lbs.
It safely and reliably charges batteries for lawnmowers, boats, motor vehicles, motorcycles, electric vehicles, ATVs, scooters, snowmobiles, small trucks, electric tools, etc.
The device intelligently detects and prevents short-circuiting, high-temperature build-up, over-charging, over-discharge, over-current, over-voltage, and polarity reversal. It also features spark resistance technology.
Heavy-duty copper clamps, jumper cables, and V-0 (the highest fireproof grade) housing ensure super safety and durability. The durable polycarbonate (PC) and ABS material ensure that Sailnovo Battery Charger is drop-proof, waterproof, and dustproof. The housing is tightly sealed and so even if you drop the jump starter into water, you can still immediately use it to charge your battery without any worry.
The smart car battery maintainer detects a defective battery before you charge it, in maintenance mode and it constantly provides you with battery charge level and diagnostic information.
Foval Automatic Trickle Battery Charger is a lightweight, fully automatic, and easy-to-use smart charger that will top up and maintain your battery so that it is always ready whenever you want to drive.
Some of its safety and convenience features include;
Reverse polarity protection
Spark proofing
Reverse polarity guard
Short-circuit protection
Over-current and over-voltage guard
Quick connect and detach alligator and ring connectors
The trickle charger fits all types of 12V automatic batteries, all lead-acid batteries, flooded, AGM, and gel cell sealed maintenance-free batteries.
Just like the Mroinge 12V 2A trickle battery charger, Foval follows the 4-stage charging process (Initialization, Bulk Charge, Absorption Mode, and Float Mode) to optimize battery performance and extend its life.
You can use this trickle charger to resurrect fully drained batteries for your car, ATVs, scooter, bike, motorcycle, lawnmower, lawn tractor, boats, watercraft, aircraft, golf carts, back-up generators, and so on.
ISM (Infinite Sequential Monitoring) adaptive charging enables the charger to adapt to the battery’s situation at a speed of hundreds of times per second.
Motopower is an all-in-one all-weather charger, maintainer, trickle charger, and regenerator.
It is the ideal charger and maintainer for all 12V lead-acid batteries, flooded or sealed maintenance-free batteries. It is ETL safety standard listed.
MOTOPOWER MP00205A is a plug-in and play device that doesn’t need manual operation. You just need to connect it to your car battery and it will automatically charge and maintain the battery. It also intelligently detects if the battery has a sulfation problem and it will apply a pulse current to recondition the battery.
It is also energy efficient, given that it has zero output under no load and it never drains the battery it is supposed to charge.
All the multi-level safety protection functions required of the best battery tender for car are provided. Spark free connection, overcharge, short-circuit, reverse polarity connection.
Once the battery voltage reaches 14V, a 24- hour timer set up in the program terminates charging and switches the device to maintenance mode. This helps to avoid overcharging the battery.
Some users have found the user instructions hard to follow
A Buyer’s Guide for the Best Battery Tender for Car Storage
(i) Current Rating
The current rating of the battery tender you choose will determine how long it will take to charge your vehicle’s battery. Without accounting for losses, a 2 Amp charger will fill up a 10 AH battery in 5 hours while a 0.5 Amp charger will take 20 hours to fully power the same battery.
However, it’s important to note that you don’t want a charger whose current is too high for your battery. Charging a battery too quickly will overheat it and potentially shorten its life.
The ideal choice would be a battery tender with variable current.
(ii) Ampere-Hour Capacity
The charger’s AH rating should be higher than that of the battery if at all it is going to fully charge the battery. If your battery is 50 AH, then the tender or trickle charger should be at least 50 AH.
(iii) Safety
The best battery tender for car storage should be safe to use so that it doesn’t damage the battery. It should be able to guard against short-circuiting, reverse polarity connection, overcharging, overheating, sparks, water, oil, and other elements.
(iv) Multiple Functions
The more features your device has, the better because you’ll have one gadget doing the work of multiple gadgets. The best car battery tenders combine a battery charger, maintainer, trickle charger, and a battery regenerator. Battery maintainers that provide battery diagnostic information help prolong its life.
STANLEY BC15BS charger/maintainer can monitor the battery under load and it can also jump-start a small car or motorbike.
(v) Battery Type
Lead acid batteries can be charged by any type of charger but flooded, AGM, and gel cell batteries need a charger specifically designed for them.
FAQs: Best Battery Tender for Car
What is the Effect of Overcharging your Battery?
If you overcharge your car battery, it will eventually die. When a lead-acid battery is overcharged, the electrolyte heats up and the battery excessively generates both hydrogen and oxygen gases. In a vented battery, the cooking electrolyte will ruin the plates, damaging the battery.
In a sealed battery, the buildup of gases can burst the battery. The only way to avoid the risk of overcharging your vehicle’s battery is to buy a battery maintainer or tender that will automatically turn off once the battery is fully charged.
Conclusion
The best battery tender for car storage from our expert review will help you avoid the sudden frustration of a dead battery that won’t start your vehicle. These battery tenders will also enhance your auto battery’s performance and save you the cost of frequent battery replacement.
2 thoughts on “Top 11 Best Battery Tender for Car Storage (TESTED $ TRUSTED) in 2023”