Test My Batteries: Northstar Group 31 AGM (Stud Thread, Part NSB-AGM31)
Welcome to TestMyBatteries.com video, featuring Northstar's Group 31 AGM. We will conduct our standard procedure test which consists of 2 Inductance readings (both are calculated values based on room temp (garage heated to 60 degree F) and temperature of rating (CCA = 0F, CA=32F). Finally we follow up with a video of the load tests, from 1C and 3C continuous draw to a final peak power draw (for wattage). Below is a breakdown of product and results.
Product size: Group 31 (BCI)
Product Capacity: 110AH (c/20hr)
Terminal Type: Stud Post
Product Manufacturer: Northstar
Product Part Number: NSB-AGM31
Tests
Inductance Test (CCA) : 1211 CCA
Inductance Test (CA) : 1830 CA
Inductance tests were done on a GR-8 by Midtronics
Load Test
1C = 110 Amps (1 x Capacity) = 11.9v avg. under load
3C= 330 Amps (3 x Capacity) = 10.8v avg. under load
Peak Power (W) = 550 Amps @10v = 5500w
Peak Power (W) = 716 Amps @ 9.5v = ~6800w