Thought I would post here as there a lot of topics on this in the Gen 2 forum with a better engagement it seems. I've read through most of them and understand the theory/procedures however never having used an 'RC charger' and the information I am getting from Google/elsewhere gives me mixed opinions. Specifically in regards to charging the modules up, I am using a Hota F6 Ultra charger, settings wise: NiMH battery type, Delta Peak detection of 3mV, 6 cells and a charge of 3.0A. I initially started with 5mv and a charge of 2.0A but the behaviour which is confusing me is the same regardless, Google advised to use a lower Delta of 3mV and up the charge. There is no end voltage parameter on this charger, it relies on the Delta Peak detection/safety timer. The modules are bolted down and compressed in their original bar enclosure, using a digital temperature probe in-between the packs and occasionally measure other areas of the pack with an infrared temperature gun. Have small fan at moderate speed blowing air on the pack, room temperature is around ~28 degrees Celsius. The pack has sat for a few days, the resting voltage before charging was 7.8V. I began charging and let it go to 8.6V before manually terminating it. The pack temperature never rose above 29 degrees Celsius, I can't see any swelling. It allegedly put in 2.18Ah. The Delta Peak hasn't triggered. I am seeing advice that you should never charge the pack beyond 8.4V? Or that nearing the end the pack will get warm/hot i.e. 40 degrees Celsius - 45 degrees Celsius? What is the absolute maximum the pack can actively charge up to (safely) before having to manually terminate it? I am assuming the pack hasn't reached the max? Again online it says it can reach up to 8.7V - 8.9V, just monitor the temperature and then once it hits the higher temps it should trigger the Delta Peak?
