FAQ

Default solution folder, feel free to edit or delete it.

Cell Failure Test
To test battery health and determine if a cell may not be performing you may perform a voltage check on all batteries in the string when they beginning the ...
Mon, 22 Sep, 2014 at 5:15 PM
Cold Crank Amps
CCA (Cold Cranking Amps) - the number of amps that the battery can produce at 0 degrees F for 30 seconds.
Wed, 24 Sep, 2014 at 4:42 PM
Deficit Cycling
Rolls batteries have been designed to provide many cycles and therefore long life. This long life, however, is dependent on the correct charging regime.  ...
Tue, 26 Aug, 2014 at 4:22 PM
Ohm's Law - Calculations
Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points. Introducing ...
Sun, 29 Mar, 2020 at 11:43 AM
Operating Temperature Ranges
Battery capacity and battery recharge times are all based on each cell having an electrolyte temperature of 25ºC (77ºF). Temperatures below the nominal 25ºC...
Wed, 3 Jun, 2020 at 7:12 PM
Peukert Number
  Peukert's Formula, T = C / In (or C = T * In)  C is theoretical capacity (in Amp-Hours (AH), equal to actual capacity at one Amp) I is current (in...
Thu, 28 May, 2020 at 2:23 PM
Reserve Capacity (RC)
RC (Reserve Capacity) - the number of minutes that the battery can deliver 25 amps while keeping its voltage above 10.5 volts. Typically a deep discharge ...
Mon, 1 Sep, 2014 at 1:02 AM
Rolls Battery Engineering YouTube Channel
Visit our YouTube channel where we've posted a number of instructional videos relating to battery selection, system sizing, maintenance & troublesh...
Mon, 23 Mar, 2020 at 2:56 PM
Short Circuit Currents and Internal Resistance
Attached are the SCCR ratings and internal resistance for Rolls battery models.
Wed, 3 Jun, 2020 at 4:41 PM
What is Amp Hour Capacity?
The following information has been sourced via: http://all-about-lead-acid-batteries.capnfatz.com/all-about-lead-acid-batteries/lead-acid-battery-fundamenta...
Thu, 25 Feb, 2016 at 12:37 PM