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..::Ener-G 4600 Sub-C NiMH battery review::..

Krawlin

Quarry Creeper
Joined
Jul 21, 2007
Messages
271
Location
Sierra Vista, Arizona
One of the newest cells to hit the market, the Ener-G 4600's, have arrived! I have so far done 3 runs on the pack, and compared it to 3 runs on a Elite 4500 pack, and the results are amazing!!! Please read on!





Just recieved my Ener-G 4600, Sub-C, NiMH, 4600mAh, 6 cell side by side pack in the mail yesterday. Here is the full review.

First impressions--
The cells come in a lime green and faux carbon fiber wrap around the cell. Looks awesome, and will look great in any truck with a Mamba Max ESC (The green is almost the same). This pack came from www.boomboombatteries.com , and the pack appears to be expertly soldered and assembled, using silver battery bars, and some clear shoo goo to hold the cells together. Came with a female Deans connector as well. Overall, this pack gets a 10 out of 10 as far as first impressions and assembly quality.


The first charge--
Now most people may not agree with what I do for the first charge, but I believe in putting it on the a max safe charge rate of 4.6 amps for the first and all of the charges on this pack. Took a bit over an hour at 4.6 amps on my OFNA DigiPeak 3 charger, and the cells only got slighty warm. The pack peaked at 4700+- mAh. I then allowed the pack to sit overnight, and today took it out for the test runs.



The first run info--
First Run Test Vehicle- My Super class rock crawler with clod axles, a Tekin Rebel 2 ESC, 2 55T Integy lathe motors, 8 tooth pinions, Deans Wet Noodle wire, 16.5 inch wheelbase, and test weight at 13 pounds (including battery).

Test Location- Home rock crawling course. Sierra Vista, Arizona. 4600 Feet Elevation. Weather was 50 degrees F outside, windy (about 15 MPH), and light sprinkling rain off and on. Difficulty of challenge the rocks posed for my crawler (the test vehicle)- about a 7.5 out of 10 as far as challenging

Driving Style- Slow, quick bursts to help get over rocks when little traction was present, motors often under a medium/high load, lots of brakes, and wheelspeed test runs (Full throttle, measured by the rate at which my crawler drives away in feet from me as I walk behind it.)


First run results--
First noticed- I large increase in wheelspeed. Compared to the Elite 4500, my crawler is considered "Fast" in the crawling world. Pack gets a 10 out of 10 as far as wanted wheelspeed from my crawler.

This pack also provided my crawler with- Compared to my Elite 4500 pack, the Ener-G 4600 gave me about a 15%-20% increase in torque. This pack really makes these 55T motors shine torque wise. Battery gets a 9.6 out of 10 on off the line punch and torque, as it really gave the motors a lot of extra power.

This pack also provided my crawler with- I have a very long first run, run time of 1 hour and 20 minutes on the maiden run with this pack, and gave about 1 hour and 20 minutes +- a few minutes on second 2 runs. The Elite 4500 packs only gave me about a 50 minute run time. Pack gets a 10 out of 10 as far as capacity and ability to provide a long runtime in my crawler.

This pack also provided my crawler with- Gave me best colder weather perfomance of any NiMH pack I have ever owned. Although 50 F outside isnt very cold, the light sprinkling rain and 15 MPH winds made a considerable temperature drop. My Elite 4500 packs performed quite poorly today as a result of the colder weather, however, the Ener-G 4600 did not seem to be very affected by this colder weather. 10 out of 10 as far as colder weather perfomance.

Also noticed- The power of the pack did not fade until the last 5 or so minutes of my run. Up until then, I could not notice any drop in power. As far as how long the pack will provide power before power fade, 10 out of 10, basically providing full power for 92%-95% of the run.


Final Impressions after 3 runs on this pack with my crawler-
-Makes for an awesome NiMH crawling pack. Lots of power, torque, wheelspeed, and great runtime, and not noticable fade until very end of the run.
-Have not tested this, but I am very confident that this pack will work great with my Mamba Max 6900 system in my XXX-T, as it provide GOBS of power until the very end, and this is a probable indication of the packs ability to supply alot of amps.
-Great pack, if I ever needed another NiMH pack, I would for sure buy one of these packs again. Great quality cell, high capacity, and able to provide alot of amps.

Overall rating on this pack, basically averaging the ratings, I give this pack a 9.95 out of 10. Best pack I have ever owned, and for $48 at www.boomboombatteries.com , there is no other NiMH pack out there with this kind of power for this kind of price.

If you are a member of RCU, I also have this review up there under the Electric Offroad section. My username on there is Jolly Roger Pirate, and the thread has this same title.
 
The reason you're noticing those results are because the latest generation of Elite4500 cells are a lower average voltage cell which eliminates the problems that the super high drain cells have of self dis-charging on the shelf and very short cycle life. I can almost gurantee that the Elite 4500 will have near twice the cycles, and not suffer self dis-charging near as bad. Just something to keep in mind. In reality, you should try comparing it to an EP ir IB cell because this is not really an apple to apple comparison. You will probably find similar results just with about 500mah less.

For crawlers the lower average voltage Nimh cells are a much better choice because the runtime's will be the same, they will have a much longer cycle life, and won't self dis-charge on the shelf if you don't use it for a week or 2.
 
Got a fast vehicle to put it in? Like a stampede with too much power?


BWUA HAHAHAHAHAHAHA!!!!! John, have you gone mad!!!??? There is no such thing as too much power!!!! My XXX-T with a Mamba Max 6900 will be the perfect punishing test, as I have almost blown up an Elite 4500 pack in it... It draws so many amps, and the Elite couldnt handle it. So hopefully this pack can. I am not going to test them in my XXX-T for maybe a couple of weeks until the weather clears up a bit (To dang cold outside), and I am busy giving my crawler some much needed maintenance. But once all of that is done, I will for sure test the pack in my XXX-T!
 
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