My 2010 Honda Insight has 38k miles, and has had the IMA light come one twice then off. Codes were p0562 and p1448. Voltage reads as low with the ignition on; 11 point something. p0562 is described as "voltage low". When driving, the car will always regen uphill, and does not assist as long as it used to. Mileage is still good at 47 avg and sometimes closer to 50. After reading many threads, it seems that the 12v battery can drain the IMA battery or cause the system to need to regen to keep 12v voltage up, resulting in an IMA code when really the 12v battery is at fault. I see that a slightly larger 12v battery is a big improvement; my question is whether this voids the IMA warranty in any way? It does not seem that it would, but I felt it safer to ask if any have done this and experienced warranty hassles. Many thanks for such an informative forum!