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Series/Parallel Connections: * To increase both voltage and capacity, connect additional batteries in series and parallel. For example: Four T-105, 6V batteries rated at 225 Amp-Hours (AH) connected in series/parallel. System Voltage: 6V + 6V = 12V System Capacity: 225AH + 225Ah = 450AH
Parallel Connection: * To increase capacity, connect batteries in a parallel. This will not increase the system voltage. For example: Two T-105, 6V batteries rated at 225 Amp-Hours (AH) connected in parallel System Voltage: 6 Volts System Capacity: 225AH + 225AH = 450AH
Series Connections: *To increase voltage, connect batteries in a series. This will not increase the system capacity. For Example: Two T-105, 6V batteries rated at 225 Amp-Hours (AH) connected in series. System voltage: 6 + 6 = 12 Volts System Capacity: 225 AH
Capacity is the measure of the energy store in a battery. Expressed in Ah (Ampere hour) or mAh (Milli-amp hour), capacity defines the ability of a battery to perform under specified discharge criteria over a set period of time. Capacity can help you determine the length of run-time of your battery if you know what your device is drawing at an hourly rate. For example: A 12 Volt 7 Ah battery will run for 7 hours (approximately) if the device draws an amp and hour.
The amount of time a battery will retain an operable percentage of it's stated capacity (calculated under ambient temperature storage conditions).
Self-discharge is the loss of useful capacity within a battery due to internal chemical reactions. Self-discharge will occur within all battery chemistires and will be influenced by temperature. Self-discharge will occur regardless of whether the battery is connected to a device or not.
"Smart" batteries have internal circuit boards with smart chips that allow them to communicate with laptop/computer/notebook and monitor battery performance. "Dumb" batteries will operated the device, but lack the communication chip.
Sulfation is the formation or deposit of lead sulfate on the surface of and within the pores of the active material of the lead plates within a battery. If the sulfation becomes excessive and forms large crystals on the plates, the battery will not operate efficiently or may not work at all. Common causes of battery sulfation are standing a long time in a discharged condition, operating at excessive temperatures, and prolonged under or over charging.
Starting batteries (sometimes called SLI for starting, lighting, ignition) are commonly used to start and run engines. Engine starters are generally rated for their output cranking power (CCA). Starting batteries are not recommended for deep cycle applications, but will provide some extended power ( defined as reserve capacity RC) in the event of failure of a vehicles electrical generating system.
RC (Reserve Capacity) is the number of minutes that a battery can support a 25 ampere load at 27 degrees Celsius (80 degrees Fahrenheit) until its terminal voltage drops to 1.75 volts per cell or 10.50 volts for a 12V battery. For example, a 12V battery that has a reserve capacity rating of 100 minutes, signifies that it can be discharged at 25 amps for 100 minutes at 27 degrees Celsius (80 degrees Fahrenheit) before its voltage drops to 10.50 volts.
OHM is a unit for measuring electrical resistance or impedance within an electrical circuit.
A watt is the unit for measuring electrical power, i.e, the rate of doing work, in moving electrons by, or against, an electrical potential. Formula: Watts = Amperes x Volts
A volt is the unit of measure of electrical potential or pressure.
PCA (Pulse Crank Amps) is a rating specifically geared towards starting applications only. PCA is a short duration (5 seconds), high rate discharge measurement generally used in the power-sport industry.
CCA (Cold Cranking Amps) is a measurement of the starting power of a battery at -18 degrees Celsius (0 degrees Fahrenheit) under a load (ampere draw) for 30 seconds with the end voltage maintained at 1.2 volts per cell. Several variations of CCA ratings may be applied to a battery including; MCA (Marine Cranking Amps) or CA (Cranking Amps), which are generally 20% higher than CCA (cold cranking amps) and reflect higher temperature testing.
MCA (Marine Cranking Amps) is a measurement of the starting power of a battery at 0 degrees Celsius (32 degrees Fahrenheit) under a load (ampere draw) for 30 seconds with the end voltage maintained at 1.2 volts per cell. MCA in generally 20% higher than CCA (Cold Cranking Amps).
Deep cycle batteries are designed for multiple, extended discharge/charge cycles. Deep cycle batteries can be discharged as much as 80% time after time and fully recover. This term generally refers to lead-based batteries designed with thicker lead plates than a standard automotive battery. Deep Cycle batteries provide outstanding performance in marine, RV, wheelchair/mobility and security applications.
A cycle is considered one discharge and one charge sequence for a rechargeable battery.
OEM stands for Original Equipment Manufacture, referring to the particular maker of the battery. OEM batteries are often referred to as "original" batteries.
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