battery percent and charge time

This charger adjusts the charging time in order to charge the battery completely, efficiently and safely. The microproces- sor automatically makes the necessary decisions. However, this section includes guidelines that can be used to estimate charging times.

The duration of the charging process de- pends on three factors:

1.Battery State – If a battery has only been slightly discharged, it can be charged in less than a few hours. The same battery could take up to 10 hours if very weak. The battery state can be estimated by using the built-in tester (see page 12). The lower the reading the longer charging will take.

2.Battery rating – A higher rated battery will take longer to charge than a lower rated battery under the same conditions. A battery is rated in ampere-hours (AH), reserve capacity (RC) and cold cranking amps (CCA).

The lower the rating the quicker the battery will be charged.

3.Charge rate – The charge rate is measured in amps. This charger pro- vides charge rates of 2A, 12A30A. The 80A rate is for engine start only. The 2A rate is for charging smaller batteries such as those used for mo- torcycles and garden tractors. Such batteries should not be charged using the 12V REGULAR BATTERY setting. The 12A30A rates are for charg- ing larger batteries. In the 12V REGU- LAR BATTERY mode, the charger begins at the 12A rate and increases the charge rate if it is determined that the battery can accept the 30A rate. All charging modes will decrease the charge rate as the battery approaches maximum charge.

After the charging process has started, the digital display can be used to determine charging progress by selecting the BAT- TERY % mode.

There are some important facts to keep in mind when charging a battery.

•When the display indicates 77% charged, the battery has been charged enough to start most vehicles and has already been charged as much as by many other battery chargers.

•When the display indicates 85% charged, the battery has already been charged at least as much as by most other battery chargers.

•The battery % shown in tester mode is an estimate based on the bat- tery voltage and the Battery Council International scale. The battery % shown in charger mode is an estimate of the relative charge in the battery compared to the charge it should have if the charging process is allowed to complete.

•The battery % shown in tester mode can be used to estimate the relative charge time. The lower the % shown, the longer the charge time for a given battery.

•The battery % shown in charger mode is an indication of the relative progress of the charging process. The higher the battery % displayed, the less charge time remains.

•The more a battery is discharged, the faster it absorbs charge from a charger. That means that the battery % increases faster at the beginning

of the charging process than at the end. In other words, it takes longer for the battery to absorb the last few percent of charge than the first several percent.

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Schumacher SC-8000A owner manual Battery percent and charge time, Lower the rating the quicker the battery will be charged
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SC-8000A specifications

The Schumacher SC-8000A is an advanced battery charger and maintainer designed for both professional and home use. This unit stands out for its versatility and robust performance, making it an essential tool for any automotive enthusiast or technician. With its array of features, the SC-8000A caters to various battery types, ensuring optimal charging and maintenance.

One of the main features of the Schumacher SC-8000A is its ability to charge a wide range of battery types, including standard, AGM, and gel batteries. This compatibility ensures that users can effectively maintain and charge not only their cars but also motorcycles, ATVs, and marine applications. The charger's intelligent microprocessor technology monitors the battery's condition in real time. This feature provides automated adjustments to the charging process, ensuring that your battery is charged efficiently and safely.

The SC-8000A boasts a multi-stage charging process, which includes bulk charging, absorption, and float stages. This approach optimizes the charging cycle by allowing the battery to receive a full charge without being overcharged. The maintenance mode is particularly beneficial for batteries that are stored for extended periods, as it helps to keep them in peak condition without unnecessary wear.

Safety is a key consideration in the design of the SC-8000A. The charger is equipped with reverse hook-up protection, which prevents any damage by alerting the user if the clamps are connected improperly. Additionally, the unit features short-circuit protection and overcharge protection, ensuring that both the battery and the charger are safeguarded during the charging process.

This model also features a built-in digital display that makes it easy for users to monitor the charging progress. Its compact design and lightweight construction enhance its portability, allowing users to take it on the go or store it conveniently when not in use.

In summary, the Schumacher SC-8000A combines advanced charging technology, safety features, and compatibility with various battery types. Whether for routine vehicle maintenance or emergency battery charging, it is an excellent choice for those seeking a reliable and efficient charger.
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