For example : If a light bulb used only 1 ampere in an hour then a 50Ah battery could light up 50 light bulbs for an hour. Alternatively it could power 1 light bulb for 50 hours* CA amps will always be higher for the same amp-hour rating and is probably more useful as a buying guide. It’s sometimes known as Marine Cranking Amps (MCA). Will a higher amp hour battery last longer? Although subject to battery design, an approximation of DIN to SAE CCA relationship is:- DIN = (SAE – 40) x 0.66.

EN2– The first discharge is the same as EN1, but the second discharge period to 6.0V should achieve 133 seconds, giving a total time of 150 seconds. The discharge current’s ability to meet both designs is very much subject to battery design and can vary from manufacturer to manufacturer and design to design. However, as an overview of our competitor benchmarking work at Yuasa, the relationship between EN1 and EN2 is:- Again, the IEC test is performed at -18°C . After a rest period of up to 24 hours after preparation (according to 6.2 of standard), the battery is placed in a cooling chamber with air circulation at a temperature of -18°C +/- 1°C until the temperature of the middle cell has reached -18°C +/- 1°C. The battery is then discharged according to the standard and is required to meet a voltage of 7.5V after 10 seconds and 7.2V after 30 seconds. the battery is then rested for 20+/-1 seconds after which the battery is discharged at 60% of the original current and is required to meet a voltage of 6V after 40 seconds, in accordance with table 7 of the standard. The IEC standard has a relationship between the SAE and IEN1 standard and for Yuasa batteries the SAE value can be assumed to equal IEC. EN (EN50342.1A1 Nov 2011 Item 5.3) This is the starting test according to the SAE (Society of Automotive Engineers). The test specifies that the battery at a temperature of –18°C will deliver a current equal to the Cold Cranking Amps for 30 seconds with the voltage staying above 7.2 volts (3.6 volts for a 6 volt battery). Used to identify battery types, the DIN (German Industrial Standard) Part Number system is traditionally used within Europe, but has now been replaced by ETN number system. battery power = 75 x 12 = 900 watt-hours Deep cycle vs auto batteries What does Ah mean on a battery?Information about whether the battery is fitted with end-venting at the negative end can be found in the ‘technical specification’ tab. chargers. Make sure that the charger is right for the job that you want, and that it's compatible with

The number of automotive battery standards in the world
market’s are numerous. Yuasa currently use the SAE CCA standard as a norm, giving a clear, balanced representation of battery cranking performance between startability and starting endurance. Alpha Batteries bears no responsibility for whatsoever for loss occurred due to late or failed deliveries. Scottish Highlands - AB36-38, AB55-56, FK17-21, IV1-39, IV52-54, IV63, KW1-14, PA21-40, PH19-26, PH30-41, PH49-50 This is the overall height of the battery to the tops of the terminals if these are proud of the lid. Weight with Acid (kg)CCA (Cold Cranking Amps) is a standard introduced by the Battery Council International and states the cranking amps a battery can deliver at 0 degrees F (-18C) for 30 seconds. The Ampere-Hour Capacity is the amount of electricity that a battery will deliver during 20 hours before the voltage falls to 10.50V. For example, a 60Ah battery will deliver a current of 3A for 20 hours. Recommended Charge Rate (Amps)

Amps represents a typical electrical load on a car under normal running conditions, so the Reserve Capacity gives an indication of the time that a vehicle with a normal electrical load will run with a broken alternator or fan-belt. This is a good, practical test. Standard chargers have traditional styling, simple interfaces and limited additional features. While they can beWith the car electrics – most modern cars have sat-nav and a fairly good stereo. 20 years ago this would not have been the case. Additions such as a powerful stereo were usually added later and sat nav’s didn’t even exist. In doing so the driver 20 years ago would probably not have found his or her battery going flat prematurely because the rest of the vehicle had less electronics on-board.