![]() I don't know what cell size Gyll (or E-Gyll or whatever the company assembling the EG4 batteries calls themselves now), and I don't know too much about the build quality with respect to vehicle specific factors (constant mechanical vibration, and big mechanical shocks if off-pavement). So medium term real world experiences are still mostly a little ways off. There are lots of people using large form aluminum prismatics in vehicles, but virtually all are only 1-3 years in. ![]() I think a semi-rough (dirt roads, washboard, etc) vehicle based use case would be pretty similar. Conventional wisdom in the marine electrical world is keep prismatics below 200Ah per cell, and ideally below 100Ah per cell for marine use cases. Combine that with the relative newness of their popularity (both large form factor aluminum prismatics, and the rackmount type batteries among DIYers) and that is an even bigger question mark (in my eyes). This does not necessarily mean they will be a bad fit in a vehicle, especially a big RV that stays on pavement, but it does mean to me that I would have a lower baseline of confidence in the suitability. The EG4 and other similar rackmont style batteries ( I believe) are assembled from larger form factor prismatic cells (<-actually I'm not sure what cells the EG4 uses) and were not designed/assembled with vehicles in mind. ![]() If you look at the construction, there are things that make a BB battery well suited to harsher physical conditions. TL DR they are designed with vehicle based systems in mind, and the combination of track record and warranty give some confidence there is not a high failure rate for this or any other use case. And (at least in theory/ideally) issues in the physical design will have had time to be identified and/or improved. The design model will have factored in and tested for this type of usage, and they've been around long enough now that medium term real world experiences are plentiful. I do have some general thoughts.īattleborn and similar reputable 'drop in' type batteries are designed with a vehicle based environment in mind. I dont have personal experience with the EG4 or any other rackmount type battery.
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