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| Prius Technical Discussion This is a discussion on Method to extend Hymotion Battery by 25% within the Prius Technical Discussion forums, part of the Toyota Prius Forums category; 120 A123 M1 cells configured for 13.4V (about 1kwhr) could power a 12V inverter in your trunk, and then provide ... |
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06-19-2008, 10:13 PM
| #1 |
| Phev's Plus Home Solar power1  Join Date: Nov 2006 Location: Green Valley AZ.
Posts: 12
My Car: 2004 Prius Package: #9 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0 |  Method to extend Hymotion Battery by 25% 120 A123 M1 cells configured for 13.4V (about 1kwhr) could power a 12V inverter in your trunk, and then provide the 700 Watts required by the chargers in the Hymotion battery pack while you are driving the car. This would pump about 1 Kwhr into the Hymotion battery in the first hour, extending the usuable amount of kwhr from the present 3kwhr to 4kwhr. Can the Hymotion chargers work while while the pack is being used? Cost- Buying 36v Dewalt battery packs (10 cells per Pack) off of Ebay would cost between 960 and 1200$. So increasing the cost of the whole system by 10% would improve the overall system by 25% Charging- These cells require an inteligent charging system that load levels every cell at the end of each charging cycle. This charger would have to be designed for the 13.4v system. This by the way is why the Hymotion pack does not allow the hybrid system to charge this battery. Ron |
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06-19-2008, 10:24 PM
| #2 |
| Sapphire of the Blue Sky  Join Date: Apr 2007 Location: Virginia
Posts: 763
My Car: 2007 Prius Package: #2 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0 | Re: Method to extend Hymotion Battery by 25% Uhh... Why not just connect everything together without additional recharging/inverters... |
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06-20-2008, 08:50 PM
| #3 | |
| Phev's Plus Home Solar power1 Join Date: Nov 2006 Location: Green Valley AZ.
Posts: 12
My Car: 2004 Prius Package: #9 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0 | Re: Method to extend Hymotion Battery by 25% Quote:
Good question. The Hymotion battery pack comes with it's own chargers, 3 of them. So if you wanted to add to the pack you would have to integrate another charger some how. Doing the 12v pack and going through an inverter allows you to disconnect the whole thing and take it out, Leaving the Hymotion system intact and uncompromised. Another way to do this would be too use a 36V UPS. Then you could just hook up DEwalt 36v battery packs to the UPS, so your packaging is taken care of sort of, and you can recharge the Dewalt packs with their own dewalt chargers (4 to 12 of them). Tahnks- Ron | |
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06-24-2008, 03:16 PM
| #5 |
| Phev's Plus Home Solar power1 Join Date: Nov 2006 Location: Green Valley AZ.
Posts: 12
My Car: 2004 Prius Package: #9 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0 | Re: Method to extend Hymotion Battery by 25% Thanks for that info. Too bad, I can't think of any reason why that would be necessary. Guess you could charge the system whenever you are out of the car shopping or whatever. Ron |
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