New to hybrids, not cars. Prius 2008 No start.

No put a voltmeter across the terminals on the battery side of the relays what do you got 100 volts? It's a 211 volt system you'd like to have 190 something like that usually I see cars that have been sitting for 6 months it still have 209 in the battery I don't know the actual voltage of the HV battery needed to make the engine crank but I would think it would have to be within range say 20% of the 211 figure or something like that just like a 12 volt battery won't crank a starter in a car with less than generally 10 volts it'll just crank real slow until the battery has six volts and it's not cranking at all or seven or something like that so there's not a whole lot of leeway I don't think I'm sure somebody will come along here with plenty of opinions in short order. Usually I'm starting cars in the middle of fields and sitting and towing lots generally they try to call me fast enough so we don't have a lot of game playing to do but you'd be surprised You can charge the whole pack just the way you're reading it across those terminals you want to shoot 300 volts DC at like 2.4 amps at it when you don't see a change on the charger in 5 minutes the battery is sucked up what it's going to take and you can disconnect and turn off the charger That's the general rule of thumb I use the Venice hybrid charger You can Google that out of California the guy's name is Raj
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Here is one that is pretty reliable, and has the extra capability to run the cooling fan as well which helps keep the cells from potentially getting damaged. It is pretty easy to set up. It is recommended to install the harness while the battery is still in the car, that way you can get the cooling fan involved. Once installed, its a pretty easy process of charging and discharging for a few days to recondition the battery two or three times a year and your battery should stay healthy for at least double its life. A lot of people use it that are on PriusChat.

Prolong Deluxe Reconditioning Package – Hybrid Automotive

Hope this helps!
Garrett

 

any trouble lights?