12V deep cycle battery from battery value cranking strong

Hello everyone!

It's good to have you here...
This test confirms the excellent cranking ability of a quality 12V deep cycle AGM VRLA battery.
Note the voltage on the normal (flooded cell design) starter battery dropping to 10.75V versus the AGM's 11.45V during cranking.
The LPG supply to the motor was cut for this experiment, just in case you wonder why it didn't start.
The internal resistance of the deep cycle battery can be calculated by dividing the voltage difference @ open circuit versus cranking, by the starter motor current being an estimated 250A.
The result is a very low 6 milli Ohm - confirming this battery's suitability for high current applications in combination with excellent deep cycle properties.

Thanks for visiting, and happy motoring!
www.batteryvalue.com.au

Category:

Autos & Vehicles

Tags:

• 12V
• deep
• cycle
• battery
• cranking
• low
• internal
• resistance
• VRLA
• AGM

[mrbatteryvalue]

@ ralphforu

this video isn't meant to be a shootout between a 5 year old cranker and a brandnew deep cycle battery.

The video is intended to show the deep cycle battery's ability to crank the engine of a car/4WD.

The fact that the tired cranker still did the job, offers some insight into the amount of voltage leeway the deep cycle had to offer during cranking.

cheers

[sirmasterpimp]

@mrbatteryvalue Agm batteries in general are amazing.....I started a 7.4 liter v8 with just a single 28 amp hour agm battery. Agm batteries have much higher cranking amps than their flooded lead acid (deep cycle) counterparts. The fiber glass mat in them also allows them to hold a charge for a long time....I can hold 13 volts + for over 3 months in most of my agm batteries.

[ralphforu]

this doesnt prove anything. the bosch had a starting voltage of 12.45v and not 12.9v, therefore the starting capacity was way less