The AGM battery is the battery that use the technology of Absorbed Glass Mat that contains mat of microglass fibers which is used for fixing the sulfuric acid in lead accumulators. All of the electrolyte is in the separator

Super B batteries are based on Lithium Iron Phosphate technology (LiFePO4) which is the safest Lithium Ion technology available today.

The cold cranking ampere (CCA) rating refers to the number of amperes a battery can support for 30 seconds at a temperature of -18°C (0°F) until the battery voltage drops to 1.20 volts per cell, or 7.20 volts for a 12V battery. Thus, a 12V battery that carries a rating of 600 CCA tells us that the battery will provide 600 amperes for 30 seconds at -18°C (0°F) before the voltage falls to 7.20V.

The ampere-hour (Ah) rating defines the capacity of a battery. A typical battery that is rated as a 100Ah battery at the 10 hour rate of discharge is capable of delivering 10A for 10 hours before the terminal voltage drops to a standard value such as 1.67 volts per cell, or 10.02 volts for a 12V battery. Similarly, a 50Ah battery would supply a 5A load for 10 hours. The BP1000 battery is rated at 42Ah, so it can furnish 4.2A for 10 hours.

The reserve capacity of a battery is defined as the number of minutes that it can support a 25 ampere load at 27°C until its terminal voltage drops to 1.75 volts per cell or 10.50 volts for a 12V battery. Thus a 12V battery that has a reserve capacity rating of 100 signifies that it can be discharged at 25 amps for 100 minutes at 27°C before its voltage drops to 10.75 volts.

A gel battery design is typically a modification of the standard lead-acid automotive or marine battery. A gelling agent is added to the electrolyte to reduce movement inside the battery case. Many gel batteries also use one-way valves in place of open vents, which help the normal internal gasses to recombine back into water in the battery, reducing gassing. Generally, gel batteries are less tolerant of high heat and are charged at lower power than AGM batteries.

The key difference between the gel cell and the absorbed glass mat (AGM) cell lies in the fact that in the AGM cell all of the electrolyte is in the separator, whereas in the gel cell the acid is within the cells in a gel form. In fact, if the AGM battery were to split open, there would be no acid spillage


Deep-cycle means using the battery in an application that will typically discharge 60 to 70 percent or more of the battery capacity. A standard automotive battery is an SLI (starting, lighting, ignition) battery. Its plates are designed to deliver maximum power for a short duration. Starting a car typically discharges an SLI battery less than 5 percent. When an SLI battery is used in a deep-cycle application, or in a vehicle with heavy accessory loads, the battery life will be shortened proportionally to how deeply it is cycled on a regular basis.

Once you need the battery to supply all the operating power for a vehicle or other device rather than for just SLI purpose. Additionally, deep-cycle batteries should be used in vehicles that equipped with heavy accessory loads where supply from the alternator cannot fill the battery in a fully charged condition. Some examples include vehicles with serious audio modification system, vehicles with increased electronics like GPS, upgraded Lighting system, In Car Entertainments (ICE) or boats with onboard chargers, trolling motors, fish-finders, stereos, lights, etc.

It depends on your purpose of the application of the battery.

As illustration, for the automotive application, if you store your classic or vintage cars for long periods with the alarm system engaged without maintaining the battery, you should use an OPTIMA YELLOWTOP® since the amperage drain over several weeks would damage a REDTOP® and reduce its life.

In any vehicle or equipment that will use the battery only for starting, lighting and ignition (SLI) requirements and has a properly working alternator, the OPTIMA® REDTOP® Starting Battery will perform extremely well, often providing up to two times longer life than conventional batteries. If the vehicle has few or no aftermarket accessories and uses a stock or upgraded alternator, the OPTIMA REDTOP® Starting Battery is the appropriate choice.

Remember, it is possible to have a deeply discharged YELLOWTOP® that will not start the engine; the advantages of the YELLOWTOP® are that it can accept a rapid recharge and it will recover from discharge many more times.

It is necessary to consider both the application and the charging system before deciding which OPTIMA battery is correct for you. For example, if you have a Toyota Land Cruiser with an aftermarket alarm system and you drive the vehicle every day, the OPTIMA REDTOP® would be the correct choice since the amperage drain will be nominal and the battery would be recharged on a daily basis.


If an AGM battery is deeply discharged (below 10.5 volts), most basic chargers will not supply a charge. Also keep in mind that an AGM battery will not recharge properly if treated as a regular flooded or gel battery. To charge the battery, you can wire a second fully charged automotive battery (12+volts) to the discharged AGM in parallel (+ to + and – to –). Then hook up the charger to the deeply discharged battery, setting charger at 10 amps. Leave for two hours, monitoring frequently. During this process, if the discharged battery gets very hot or if it is venting (hissing sound from vents), then stop this process immediately. When the discharged battery reaches 10.5 volts or more, remove the standard battery and continue charging the AGM until fully charged.

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For normal charging, a relatively low current, such as one or two amps, can work well, but when the battery has been deeply discharged, some sulfation of the battery plates may have occurred. If you charge at 10 amps, the higher current will help to break up this sulfation.

If you have an automatic charger, let it run until the charger indicates charging is complete. If you have a manual charger, you can get a rough estimate of the charging time in hours of a completely discharged battery (11.2 volts) by multiplying the capacity (amp hours or Ah) of the battery by 1.2. If your battery is not completely discharged, the time would be less.

In most cases these steps will recover an AGM battery. It’s OK for the AGM battery to get slightly warm during the charging process. If it’s hot to the touch, it means there’s a short and the process should be discontinued.

It depends on the type of your battery. If you are using an AGM battery, the ideal output of the alternator should between 13.65 V (minimum) to 14.8 V (maximum). However, for Lithium battery, the minimum output should 14 V to 14.4 V.

Thus, if your alternator output below those numbers, it could reduce your battery life, and if your alternator output exceed 14.8 V, it could damage the internal cell of the battery that causing cannot hold a charge.

We only recommend chargers that suit for AGM batteries if you own OPTIMA or ODYSSEY battery. However, if you have a Lithium battery like Super B, we recommend OPTIMATE Lithium as the charger.

The OPTIMATE 6 or other AGM chargers, cannot be used to charge a Lithium battery or vice-verse.

As long the other store has a charger that support for AGM battery, not a conventional battery, that would be fine.

However, for Lithium battery, it is strictly not recommended to recharge a Lithium battery at ordinary battery shop. We only recommend for those that using Ctek or OPTIMATE chargers.


It is depends on the utilization of the battery on your vehicle. If your vehicle is equipped with serious audio modification or with off road accessories that require high load such winch, shooting lamp, then a volt meter would be necessary to be installed.

The device will be helpful to monitor the battery performance, hence the deep discharged battery that can be resulted from lack of supply from the alternator or even overloaded can be avoided.

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