HV Battery Voltage output questions

The nominal voltage of a 2G battery is 201.6V (28 modules * 7.2V). The actual voltage may be 20% higher.

Have you just been replacing individual modules? If so, time to replace all 28 now, they seem to be worn out since the voltage is swinging so much.

 

I had the same question, in my case it was because I had checked the modules too soon after running the car, checked again after a couple of days and they had dropped to mid 7v.

I am pretty green at the battery thing myself but if I was a gambling man and I seen just one module almost a volt short of all others ......

From what I read here you need to cycle the whole pack to slow down the module failures, they say if you just swap a module expect to do it again in a few months but if you cycle the pack a few times it has a much better chance of surviving in the long run, apparently

cheers

 

Also, these two observations are contradictory: 8.29V * 28 modules = 232V which is within reason.

So if the OP actually measured 269V then the individual module voltages should average ~9.6V. Or, the OP's meter is not working properly and he should get a decent digital multimeter.

 

I Have question about my HV 2010 toyota prius not starting. Not geeting ready sign. All other light came up. 12 V is good. I check HV battery votsge 224v this is good?

 

Hi Nick,

Welcome to Prius Chat

A good place to ask your question about your Gen 3 Prius would be in one of the Gen 3 forums, rather than here in a Gen 2 forum.

FYI, your posts will be moderated until you have 5 or more posts under your belt. This means your next 4 posts won't be visible to everyone until a moderator approves them. A bit inconvenient, but is an anti-spam measure to protect PC from spambots.