Results 1 to 12 of 12
  1. #1
    RC poster
    Join Date
    Nov 2020
    Posts
    13

    LiPo vs NiMh for 1/16 Revo

    Hello! I currently have a 1/16 Erevo vxl brushless, and Iím currently not invested into either LiPo or NiMh, as I currently only run my merv on the one NiMh battery that came with the car. I was planning on just buying a series connector and another NiMh battery (2925X) to get that bit of extra performance, but from what Iíve been reading on the forums, most people are running their merv on either 2S or 3S LiPo. This made me question going on with my original idea, and Iím beginning to consider investing in LiPo. What do you think? How much better is LiPo than NiMh, and what batteries are best? I appreciate any suggestions, thanks.

  2. #2
    RC Competitor
    Join Date
    Sep 2015
    Posts
    68
    I like running 2s in parallel. If I had to guess I have about 30-40 minutes of high speed driving.

    Sent from my SM-G973U using Tapatalk

  3. #3
    RC Qualifier
    Join Date
    Jun 2020
    Location
    Texas
    Posts
    277
    I run nothing but 3s traxxas batteries, although I do have the 2s traxxas batteries as a backup (bought them before the 3s). One thing to note is that while you can run lipo batteries in parallel (not series), Traxxas doesn't support it and their Parallel Y connectors prevent it. A single 2s lipo battery is roughly equivalent to a single nimh battery voltage. Lipo has the advantage of increased discharge rates, which give more punch than NiMH.

    2s Lipo
    - Similar in voltage to NiMH (7.4v vs 7.2v)
    - More "punch" than NiMH
    - No Traxxas support for parallel setups (you can modify the Traxxas connector or buy a different brand y connect if you want to do it anyways)
    - Longer run times than NiMH as Lipos are more efficient
    - Requires LiPo care (Balanced Charging, Storage Charging, LiPo Safe bags, etc)

    3s Lipo (Same as 2s LiPo except):
    - a little less voltage than two NiMH in series (11.1v vs 14.4) but less weight
    - Causes ESC & Motor to heat up faster (fans required)

  4. #4
    RC Racer McCreary's Avatar
    Join Date
    Feb 2017
    Location
    NJ
    Posts
    147
    Quote Originally Posted by AngelG619 View Post
    Hello! I currently have a 1/16 Erevo vxl brushless, and I’m currently not invested into either LiPo or NiMh, as I currently only run my merv on the one NiMh battery that came with the car. I was planning on just buying a series connector and another NiMh battery (2925X) to get that bit of extra performance, but from what I’ve been reading on the forums, most people are running their merv on either 2S or 3S LiPo. This made me question going on with my original idea, and I’m beginning to consider investing in LiPo. What do you think? How much better is LiPo than NiMh, and what batteries are best? I appreciate any suggestions, thanks.
    Like halygon stated, a LiPo will give you more punch, and provide full power during the runtime. Whereas NiMh lose power during the run. Personally, I never ran the NiMh battery that came with my MERV. I ordered a 2s LiPo along with my purchase of the car. It'll do standing front flips and backflips on a 2s Lipo, and you'll definitely need a wheelie bar. You'll also need to shim the differentials or else you'll strip them. Especially the rear diff. They provide plenty of power for bashing. 3s turns them into a little rocket, but your maintenance costs will go up as well. I just use a passive heat sink, and I've had no issues with overheating.
    Currently I'm using a pair of Gens Ace 2s LiPo, and a pair of Gens Ace 3s LiPo. LiPo also require more attention when charging and storing. You'll want to get a fireproof bag to keep them in when you're not using them, and while they're charging. They're well worth a few minor inconveniences.

  5. #5
    RC Competitor
    Join Date
    Sep 2015
    Posts
    68
    Quote Originally Posted by halygon View Post
    I run nothing but 3s traxxas batteries, although I do have the 2s traxxas batteries as a backup (bought them before the 3s). One thing to note is that while you can run lipo batteries in parallel (not series), Traxxas doesn't support it and their Parallel Y connectors prevent it. A single 2s lipo battery is roughly equivalent to a single nimh battery voltage. Lipo has the advantage of increased discharge rates, which give more punch than NiMH.

    2s Lipo
    - Similar in voltage to NiMH (7.4v vs 7.2v)
    - More "punch" than NiMH
    - No Traxxas support for parallel setups (you can modify the Traxxas connector or buy a different brand y connect if you want to do it anyways)
    - Longer run times than NiMH as Lipos are more efficient
    - Requires LiPo care (Balanced Charging, Storage Charging, LiPo Safe bags, etc)

    3s Lipo (Same as 2s LiPo except):
    - a little less voltage than two NiMH in series (11.1v vs 14.4) but less weight
    - Causes ESC & Motor to heat up faster (fans required)
    I use the nimh Y splitter... whoops. Didn't notice that it wasn't for lipos. Nothing has happened to the car or harness though.

    Sent from my SM-G973U using Tapatalk

  6. #6
    RC Qualifier
    Join Date
    Jun 2020
    Location
    Texas
    Posts
    277
    Quote Originally Posted by Extremercing View Post
    I use the nimh Y splitter... whoops. Didn't notice that it wasn't for lipos. Nothing has happened to the car or harness though.

    Sent from my SM-G973U using Tapatalk
    Apparently the older adapters didn’t have the limiting tab on it like the new ones do - you probably have an older one. I spoke with the guy at the Traxxas retail store and they said they were told it’s because not all batteries are equal and it’s possible for you to plug in two types of batteries or one that’s damaged, which allows it to draw from one battery more than the other and in LiPo world, a battery too low of voltage is disaster waiting.

  7. #7
    RC poster
    Join Date
    Sep 2020
    Location
    Los Angeles, CA
    Posts
    19
    Running 2S Lipo on my MERV. It gives me enough punch without overloading electronics and mechanics.

  8. #8
    RC Racer EclipseMantis's Avatar
    Join Date
    Jul 2020
    Location
    Washington State
    Posts
    132
    People have already given pros/cons, and I'm just going to say that LiPos are unbelievably better.

    Quote Originally Posted by halygon View Post
    Apparently the older adapters didn’t have the limiting tab on it like the new ones do - you probably have an older one. I spoke with the guy at the Traxxas retail store and they said they were told it’s because not all batteries are equal and it’s possible for you to plug in two types of batteries or one that’s damaged, which allows it to draw from one battery more than the other and in LiPo world, a battery too low of voltage is disaster waiting.
    I know that if you have a bit of common sense that it doesn't matter, but I wonder why Traxxas is fine with people using 2 lipos on a E-Revo but not a Merv.
    𝘚𝘓4𝘚𝘏

  9. #9
    RC poster
    Join Date
    Nov 2020
    Posts
    13
    Thanks for all the great answers. It really helps for someone who is new to stuff like LiPo. I guess I'll be looking into the Traxxas 2S LiPo battery and the charger they sell (Hopefully I find a good discount, as they're not exactly cheap). You mentioned I should get a fireproof bag for the battery, is there anything else I need to purchase or need to be aware of?

    Edit: I went on the Traxxas website and was looking at the batteries, but I couldn't figure out which one was the 2S one. They sell one (blue) that has a higher capacity but lower voltage, and another (red) that has a lower capacity but higher voltage. Which one is the 2S?
    Last edited by AngelG619; 11-27-2020 at 10:36 AM.

  10. #10
    RC Champion grizzly03's Avatar
    Join Date
    Dec 2014
    Location
    Adirondacks
    Posts
    2,439
    A 2s Lipo battery is the 7.4v 2-cell
    A 3s Lipo battery is the 11.1v 3-cell

  11. #11
    RC Qualifier
    Join Date
    Jun 2020
    Location
    Texas
    Posts
    277
    Quote Originally Posted by AngelG619 View Post
    Thanks for all the great answers. It really helps for someone who is new to stuff like LiPo. I guess I'll be looking into the Traxxas 2S LiPo battery and the charger they sell (Hopefully I find a good discount, as they're not exactly cheap). You mentioned I should get a fireproof bag for the battery, is there anything else I need to purchase or need to be aware of?

    Edit: I went on the Traxxas website and was looking at the batteries, but I couldn't figure out which one was the 2S one. They sell one (blue) that has a higher capacity but lower voltage, and another (red) that has a lower capacity but higher voltage. Which one is the 2S?
    With Traxxas batteries, blue is 2s and red is 3s.

  12. #12
    RC Racer McCreary's Avatar
    Join Date
    Feb 2017
    Location
    NJ
    Posts
    147
    Quote Originally Posted by AngelG619 View Post
    You mentioned I should get a fireproof bag for the battery, is there anything else I need to purchase or need to be aware of?
    You'll most likely need to shim the differentials if you're going with LiPo. I have 2 shims in the rear diff, and one shim in the front diff. I used Team Associated #21141 shims. Here's a YouTube video that shows you how to do it. https://youtu.be/Gnq6PQ2nDpg

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •