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PLEASE READ ENTIRE LISTING. IMPORTANT OPERATING INFORMATION BELOW. DO NOT USE NiCad CHARGER ON THIS BATTERY.

Evil Upgrades is proud to present out new R/C Tank Lipo battery upgrade. Our new battery features a Tamiya style plug adapter suitable for most 1/16^th scale 7.2v (NiCad battery) R/C Tanks. Our new tank battery upgrade is actually a 7.4v Lipo battery vs. the 7.2v NiCad style of battery your tank came with.

There are many advantages of using a 7.4v lipo vs. the NiCad. NiCads lose a considerable about of power very soon after you start using the tank. You may notice that as soon as you start driving on a full charge, it seems like the tanks power is less and less as you use it. This is due to how NiCads discharge their power. Just like a AA battery in a flashlight, as you use it, the light becomes dimmer and dimmer until you say enough is enough and replace it. Lipos discharge their power in a totally different way. A Lipo battery provides nearly 100% of its original power right up to the point of being fully discharged, so what you end up getting is the full charged effect for your entire run time. I have been running Lipos in all my personal tanks for years. Please feel free to do some online research on the subject and you will find that most all R/C tank operators prefer lipos over NiCads. Not only do my tank batteries provide constant voltage but they are 2000mAh vs. the typical 1700mAh NiCad. Not to mention that fact that my 2000mAh lipos are half the size and weight of the bulky stock NiCads.

NiCad batteries have a memory and need to be fully discharged prior to being recharged, lipos do not.

The one downside to lipos is that they are always in danger of being discharged too far. If a lipo cell goes below 3 volts it may not take a charge ever again. When flying R/C helicopters or planes, this is easy to avoid as you will notice a loss of overall power when you start to near the 3 volts per cell range. In a car or R/C tank this is much harder to detect. We at evil upgrades have come up with an innovative approach to this issue. Every Evil Upgrades tank battery comes with a free digital battery monitor alarm. This handy device has a bright LED display which shows each cells voltage along with the total voltage of your lipo. But more importantly it also has dual high decibel alarms set at 3.3v per cell (you can also set your own low voltage limit). This convenient device fits easily inside the battery compartment with your battery, attached to the balance plug. It is incredibly loud when it goes off, so no chance you will not hear it. When your battery is out of juice, it will go off and you will never run your new tank lipo below its cut off point. Keep in mind you will need a lipo battery charger to use this battery DO NOT HOOK UP MAIN POWER WIRES TO NiCad CHARGER!). The stock NiCad battery charger will not work on this battery. However many chargers have the option to charge both NiCads and Lipos. You can pick up a great lipo charger for around $20 or less. I like this style for the price

http://www.ebay.com/itm/SKYRC-E3-AC-Input-2S-3S-Lipo-Battery-Balance-Charger-US-Plug-E8-/112269128802?hash=item1a23c2f462:g:DWgAAOSw44BYem65

Specs:

-7.4v lipo

-2000mAh total power

-Comes with free digital power alarm

-105 grams
L=89mm
H=35mm
W=16mm

-Very high discharge rate of 40-50C

In order to avoid this damage to your lipo batteries try these suggestions:

-Never leave your lipos fully charged while storing for more than 30 days straight. It is best to leave your batteries at 3.9 volts per cell if you are not planning on using them within a week. Leaving them stored at full charge will seriously decrease the longevity of the battery as well as increasing the chance of a short in the battery as fully charged lipos are much more unstable than ones maintained at a safe storage voltage of 3.9 volts. A discharging device is essential to proper battery care. I recommend the Battery Medic which includes not only a discharger but also a cell balancer and most importantly an LCD display which indicates each individual cells voltage. Without knowing each cells voltage, you are really flying in the dark when it comes to your batteries health. (Battery Medic will only work for 7.4volt batteries and higher. It will not work with 3.7 volt batteries).

-One of the biggest mistakes R/C pilots make is flying too long. The rule of thumb is, as soon as you notice the slightest loss of power, i.e. the operator having to increase the throttle to maintain the same altitude. If you fly your heli until it cannot get off the ground, you may have already damaged your battery and it may no longer take a charge. These batteries are not like the lipos in your cell phone, and you never want to fully discharge and re-charge in order to make it last longer.

Even though all lipo chargers say they also balance, they do not perform nearly as well balancing as they do charging. I would highly recommend getting an additional battery device like the battery medic.

-----------------------DISCLAIMER--------------------------

-DO NOT UNDER ANY CIRCUMSTANCES TRY CHARGING THIS BATTERY WITH A NiCad CHARGER, ONLY A BALANCE PLUG STYLE LIPO CHARGER WILL WORK.

-THIS IS A CUSTOM UPGRADE BATTERY. USE AT YOUR OWN RISK, EVIL UPGRADES IS NOT RESPONSIBLE FOR ANY DAMAGE TO R/C EQUIPTMENT. IF YOU ARE IN DOUBT ABOUT ANYTHING REGUARDING THIS BATTERY OR ITS USE, PLEASE CONTACT US VIA EMAIL AND WE WILL BE MORE THAN HAPPY TO ASSIST YOU RIGHT AWAY.