Deep cycle batteries, like those used in forklifts, motorized wheelchairs, or on boats, have different charging needs than your average car battery. Since deep cycle batteries are designed to be fully discharged on a regular basis, the way they are charged has to accommodate those needs. Regular car battery chargers are not made to meet those needs. This is where the Schumacher SEM-1562A-CA comes in.
Another great feature of deep cycle battery chargers is their ability to charge standard car batteries. While a standard battery charger does not work on a deep cycle battery, you can easily charge your car or truck battery with a deep cycle battery charger. This versatility makes a deep cycle battery charger a must-have for your garage.
What Is the Schumacher SEM-1562A-CA 1.5 Amp Speed Charge Battery Maintainer?
The Schumacher SEM-1562A-CA is a deep cycle battery charger that is designed to meet the charging needs of deep cycle batteries. This "smart-charger" automatically adjust the level of charge according to a specific schedule that is necessary to charge deep cycle batteries. This frees you from trying to remember the schedule and make the adjustments yourself, eliminating the risk of accidental battery damage.
The Schumacher-1562A-CA battery maintainer has a space saving design. At just six inches long and about 3 inches wide, it doesn't take up much room. It's also lightweight, coming in at just over two pounds. This design makes it easy to carry for use in different areas.
The Schumacher-1562A-CA runs on standard 120V current to produce 0.4 amp of output voltage. It is equipped with automatic voltage detection, allowing it to operate on six or twelve volt batteries. A built-in microprocessor automatically changes the amperage rate depending on whether the battery needs to recharge or maintain its charge.
Hooking It Up
The Schumacher-1562A-CA has a quick-connect harness that allow you to attach either connector quickly and easily. It will not run if the connectors are reversed, the LED will flash to warn you that it is not connected properly. This is a nice safety feature of this battery maintainer.
The multi-stage charging feature ensures precision charging and extends the life of your battery. This Schumacher-1562A-CA then automatically keeps your battery at its optimal charge with the use of float mode monitoring. These features add to the safety of using this battery maintainer.
Four-Step Charging System
The Bulk Phase is where the majority of the battery charging takes places. Operating at a higher voltage, around 15 volts, the battery is charged to 75% capacity. The charging system then switches to the Absorption Phase, maintaining the voltage but reducing the amperage. During the Acceptance Phase the battery is charged fully.
Once your battery is charged, it enters the Maintenance Phase. You can leave your battery connected to the charger during the Maintenance Phase to keep it charged and ready to go. The final phase is the Desulfation Phase. This phase is designed to break down lead sulfate crystals which will extend your battery life.
Deep Cycle Batteries vs Starter Batteries
Both deep cycle batteries and starter batteries are lead-acid batteries. However, there are some key differences between the way these two different batteries make use of their electrical reserves. These differences affect the charging method between the two.
Starter batteries, like those found in cars and trucks, are made to discharge when starting the vehicle. The battery releases a surge of electricity, then once your vehicle starts, the alternator takes over the job of providing electric current and also recharges the battery while the vehicle is running. Starter batteries are not meant to be fully discharged, and can be ruined if they are.
Deep cycle batteries, on the other hand, are designed to be fully discharged over and over again. They provide a steady current of electricity over a long period of time, only providing occasional surges if needed. This makes them ideal for use in things like golf carts, electric wheelchairs, forklifts, boats and other motorized vehicles that do not have alternators.
How It Compares
We picked a few similar products available on the market to see how they compare. We reviewed these chargers on price, features, ease of use, range of use and available warranties. Read on to see how the Schumacher SEM-1562A-CA stacks up to some other popular models. These reviews will help you determine which battery charger is right for your needs.
Schumacher SEM-1562A-CA 1.5 Amp Speed Charge Battery Maintainer
Ease of Use
The quick connect harness and microprocessor make the Schumacher SEM-1562A-CA user friendly.
Range of Use
The cables are on the short side, which limits how far you can place the charger from the battery.
With safety features like battery overheat and reverse polarity sensing, the Schumacher SEM-1562A-CA can be used with peace of mind. Its microprocessor and four-stage automatic charging sequence allow hands-free operation. Its multi-stage charging system takes care of the charging schedule for you. The Schumacher SEM-1562A-CA is able to sense whether your battery is a 6V or a 12V and adjusts its operation to suit the battery. The automatic temperature compensation feature will automatically adjust the maximum charging and maintaining current according to the surrounding air temperature.
It comes with a warranty which covers a period of two years.
NOCO Genius G3500 6V/12V 3.5 Amp Ultra Safe Battery Smart Charger
The NOCO Genius G3500 is capable of charging a wide variety of batteries, from standard car batteries to lawn and garden along with deep cycle batteries. The four-stage charging system is operated automatically with a built-in microprocessor. This smart charger works on 6V and 12V lead-acid batteries and ion lithium batteries up to 120 Ah. It is also unique in that it can charge CANBUS electrical systems and micro-hybrid start and stop vehicles. The NOCO Genius G3500 is the most versatile battery charger we reviewed.
Ease of Use
This smart charger remembers the last charge setting in four separate positions so all you have to do is hook up your battery to the same position when you need to recharge it.
Range of Use
The cables are short, which means you can't set your charger very far from your battery. However, this can be remedied with optional cable extenders that can be purchased separately.
With a built-in microprocessor, the NOCO Genius 3500 will automatically charge your battery, while the float mode will protect it against being overcharged. Its speed charging system allows you to charge a battery as much as two times faster than other smart chargers. It also has a wide range of safety features including Spark Proof connections and short-circuit protection. Its compact design is enhanced with a rubberized bottom that keeps it from slipping while in use. Using the Desulfation Phase will help your battery to last longer.
The Noco Genius comes with a 5-year limited warranty
Battery Tender 021-0123 Battery Tender Junior 12V, 0.75A Battery Charger
One of the more popular battery chargers we reviewed, the Battery Tender 021B-0123 is capable of charging and maintaining a wide range of batteries, including lead-acid and ion lithium batteries. It automatically senses when the battery is charged and reduces the current to prevent overcharging. There is also a variety of safety features so you know that your battery will be charged without issues.
Ease of Use
The quick-connect harness makes it easy to use in hard to reach places. Add to that the automatic charging system and safety features, and the Battery Tender 021-0123 is very user-friendly.
Range of Use
The shorter power cord keeps the battery charger close to the outlet. The range of the power cord can be extended with an optional 25 foot power cord which is sold separately.
This battery charger is well-suited to charging motorcycle, scooter, and lawnmower batteries. Its microprocessor switches the current to the Maintenance Phase when the battery is fully charged. The temperature compensated, four-step charging system gives you hands-free operation of the charging schedule. This charger also has the Desulfation Phase to extend your battery life. Among its safety features are reverse polarity protection and Spark Proof connections. LED warning lights will flash if the connectors are hooked up wrong.
The Battery Tender 021-0123 is covered by a full 10-year limited warranty. This is the best warranty of the models we reviewed.
DieHard 71239 Platinum Smart Battery Charger & Maintainer
Ease of Use *****
Its fully automatic operation and three connection options make this an easy-to-use charger with versatility.
Range of Use ****
The cables and power cord are short, limiting the distance you can use the charger from the wall socket.
The 5 step multi-stage charging system is controlled by a microprocessor to ensure precision operation. The quick-connect harness has three connection options: the 50 amp clamps, permanent ring connectors, or the 12V accessory plug. This charger is ideal for charging and maintaining motorcycle, car, RV and lawn tractor batteries. Its safety features include reverse polarity protection and automatic prevention of overcharging.
The Die-Hard 71219 is backed by a 3 year warranty.
If you are looking for a battery maintainer for your marine battery, motorcycle, or electric wheelchair, the Schumacher SEM-1562A-CA is a good choice. It offers many of the same features of higher cost models, including a fully automatic, 4-stage charging system; reverse polarity protection; and a convenient connection harness. It is user-friendly with an LED display that shows the batteries status, freeing you to focus on more interesting things. The Schumacher SEM-1562A-CA gives you good value for the money.
The biggest drawback of the Schumacher SEM-1562A-CA is its warranty. At just two years, it has the shortest warranty of the models we reviewed. However, since it is one of the least expensive models, the low price balances out the short term of the warranty. The Battery Tender 021-0123 has the best warranty at ten years, and averages about $10 more than the Schumacher SEM-1562A-CA.
Both models offer many of the key features, however the Schumacher SEM-1562A-CA has a more compact, portable design than the Battery Tender 021-0123. If space is a concern, then the Schumacher SEM-1562A-CA is the better choice for you.