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Fitting mobility 12volt AGM battery.

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Britprius, Mar 3, 2013.

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  1. Patrick Wong

    Patrick Wong DIY Enthusiast

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    To what extent do you and your friend apply auxiliary charging to the 12V battery?
     
    #281 Patrick Wong, Jun 1, 2015
  2. bisco

    bisco cookie crumbler

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    are these available in the usa?
     
    #282 bisco, Jun 1, 2015
  3. dolj

    dolj Senior Member

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    Yes and likely comparable models. This is discussed fairly extensively near the beginning of the thread.
     
    #283 dolj, Jun 2, 2015
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  4. Britprius

    Britprius Senior Member

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    Neither battery has had charging from an outside source, verified by a call to my friend. I think the reason for the high under load voltage is probably due to the very low internal resistance of these batteries. The measurements were taken at the battery with a calibrated meter.

    John.
     
    #284 Britprius, Jun 2, 2015
    Last edited: Jun 2, 2015
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  5. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Nice. How many annual miles are logged?
     
    #285 Patrick Wong, Jun 2, 2015
  6. Britprius

    Britprius Senior Member

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    My millage is about the UK average of 12,000 miles since I retired the car being driven most days. When I was working it was typically 55,000 miles a year, but not all within the UK.

    John
     
    #286 Britprius, Jun 2, 2015
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  7. bisco

    bisco cookie crumbler

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    what would be the theoretical effect of running one of these batteries flat, then recharging? assuming you have not done that. that seems to be the weakness of the oem battery.
     
    #287 bisco, Jun 2, 2015
  8. Britprius

    Britprius Senior Member

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    These batteries are designed to be discharged on a daily basis in there normal duty powering mobility buggies. The manufacturer suggests 1000 cycles to 80% discharge as the normal life span with occasional 100% discharge doing no harm. This is providing the battery receives a full charge as soon as possible (normally within 24 hours). This would be being the equivalent of discharged and charged daily for three years.
    The batteries are also rated at a 10 hour discharge rate. A much more rigorous rate than the normal 20 hour rate most manufacturers use.
    Most batteries are considered deeply discharged at 50% level.

    John
     
    #288 Britprius, Jun 2, 2015
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  9. bisco

    bisco cookie crumbler

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    thank you john.
     
    #289 bisco, Jun 2, 2015
  10. bisco

    bisco cookie crumbler

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    the web shows ritar as a chinese company est. 2002, doesn't mention usa at all.
     
    #290 bisco, Jun 2, 2015
  11. bisco

    bisco cookie crumbler

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    i can't find a prius spec for ritar, anyone bought one in the us?
     
    #291 bisco, Jun 2, 2015
  12. Britprius

    Britprius Senior Member

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    The box that the battery came in gave the manufacture as a US company, but made in China. I may still have the box my friends battery came in if so I will post a picture.
    If these batteries have a downside it is there weight 18kg against 11kg for the OEM, but the capacity of lead acid batteries is directly related to the amount of lead they contain.
    Ritar : Home
    John
     
    #292 Britprius, Jun 2, 2015
  13. bisco

    bisco cookie crumbler

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    i saw that pic john. it doesn't really matter, i just can't find corroboration online. their own site lists them as a chinese company doing business around the world.
     
    #293 bisco, Jun 2, 2015
  14. Britprius

    Britprius Senior Member

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    Specifications in the link below I used the RA series 12-55
    Ritar : Home

    John
     
    #294 Britprius, Jun 2, 2015
  15. bisco

    bisco cookie crumbler

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    are your dimensions the same as sks, or non sks?
     
    #295 bisco, Jun 2, 2015
  16. bisco

    bisco cookie crumbler

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    sorry john, i see all the specs in your post #9, thanks!
     
    #296 bisco, Jun 2, 2015
  17. Britprius

    Britprius Senior Member

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    The UK gen2 Prius did not have SKS, but the battery we have as OEM is the larger of the two batteries (45 ah) as fitted to US vehicles with SKS.

    John
     
    #297 Britprius, Jun 2, 2015
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  18. bisco

    bisco cookie crumbler

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    hoping someone from the u.s. can post a source for purchase.
     
    #298 bisco, Jun 2, 2015
  19. xliderider

    xliderider Senior Member

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    +1, I found a Duracell scooter battery at a Batteries Plus local to me on the internet, but it was $129. It would be great to find something in the sub $100 range. :)
     
    #299 xliderider, Jun 2, 2015
  20. dolj

    dolj Senior Member

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    I don't believe you can realistically find a good sub $100 battery in this class. The reason you would go this route is that they tolerate deep cycling and have a greater capacity. For these things you pay a price.
     
    #300 dolj, Jun 2, 2015
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