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  1. #1
    RC Enthusiast
    Join Date
    Jul 2012
    Location
    Texas
    Posts
    29

    ? about Batteries for my new UDR

    Getting a new UDR. I have two 2s 5000mah batteries, but one is a 40c and the other is a 25c. Can I run these in the UDR, Or will I need to have two batteries with the same specs? I am not a basher or a high speed driver, more of a scale driver and will not be running it over about 20mph.

  2. #2
    RC Competitor
    Join Date
    Mar 2018
    Location
    So Cal
    Posts
    77
    Best to to have matching batteries when 2 are needed. Donít know that unmatched batteries will damage any electronics, but not worth the chance of your new $$$ UDR.


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  3. #3
    RC Enthusiast
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    Jul 2012
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    Texas
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    Thank you, that's kinda what I was thinking. I didn't know if the "C" made a difference.

  4. #4
    RC Racer
    Join Date
    Nov 2018
    Location
    Spokane, WA
    Posts
    240
    Smc racing makes great batteries


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  5. #5
    RC Competitor
    Join Date
    Mar 2018
    Location
    So Cal
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    77
    Quote Originally Posted by cwmoss View Post
    Thank you, that's kinda what I was thinking. I didn't know if the "C" made a difference.
    The C is the discharge rate, the higher the C rating, the more energy is discharged.


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  6. #6
    RC poster
    Join Date
    Jun 2019
    Posts
    1
    I have a 40c and 25c as well, and have ran a few packs because I just bought the UDR this weekend. No issues so far. They batteries do get hotter than in my sct trucks, but I am pretty sure you only need 25c 5000mah for the UDR but I may be wrong

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  7. #7
    RC Competitor
    Join Date
    Mar 2018
    Location
    So Cal
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    77
    I run 2 7600 mah 35c 2s batts with no problems.


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  8. #8
    RC Enthusiast
    Join Date
    Jul 2012
    Location
    Texas
    Posts
    29
    While I was at the hobby shop on Saturday, I just went ahead and bought two 2s 5000mah 25c batteries, better be safe than sorry. I also bought a Savox servo to have as a spare for when the stock servo decides it's had enough. I got to run it yesterday before it started raining and it scoots pretty good with the 2s batteries. I am gonna get a couple 3s 5000 35c ones, just to see the difference they make. Probably be putting it in training mode when I run the 3s ones.

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