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BATTERY RECOMMENDATIONS FOR E-MAXXIt is important to know what battery packs should I buy and how tocharge them? There are so many battery packs available that it is hardto make specific brand recommendations. However, here are a fewpoints to keep in mind about batteries and charging.
The higher the mAh rating, the longer the battery run time. That is, a3000 mAh battery pack will provide you with twice the run time of a1500 mAh battery pack. Battery packs with 2400, 3000 or 3300 mAhratings are expensive to purchase. If cost is an issue, 1500 to 1800mAh NiCD packs are very economical to purchase and work well in theE-Maxx The battery packs should be 7.2 volts and have a standardTamiya connector as well and should be assembled with 6 sub-C sizedcells.
The 6-cell NiCad or NiMHbattery packs should be charged between 3and 5 amps on a peak detection charger designed for both the packs.For backyard bashing or general use, a 3 to 4 amp charge rate isrecommended. For racing, a 5 amp charge rate is recommended, butlower charge rates are fine too. If recharging the battery packs isrequired then they should be allowed to cool down completely beforeany re-charging is done or else the packs could be damaged.While storing, NiCad battery packs should be completely dischargedbefore they are recharged or stored to maintain optimumperformance. On the other hand, NiMH battery packs need not be tobe completely discharged before they are recharged, but it isrecommended that NiMH packs be fully discharged every 4 to 8 weeks.If NiMH packs are not going to be used for more than two weeks theyshould be partially charged 30 to 50% of their maximum capacity. Forlong-term storage of NiMH packs it is suggested that they should befully charged. The easiest way to discharge your battery packs is tosimply run them in your E-Maxx until the truck slows to a crawl.
It is important to know how many battery packs should one buy? Sixbattery packs is an excellent setup because then one can have twopacks running E-Maxx, two packs charging and two packs cooling,which means obtaining uninterrupted run time. It is important toremember to let battery packs cool down before charging them againor else it significantly decreases their life expectancy. Moreover it ismore economical to have two battery chargers. It is also the only wayto have a whole day of uninterrupted run time or fun. Alternatively, apeak charger can also be purchased that charges two battery packs atthe same time, such as the excellent MRC Super Brain 969 ProCharger.
Usually E-Maxx racers typically like to charge at 5 amps because theirbattery packs have a bit more low-end punch or torque. If one isserious about E-Maxx racing, it is preferable to purchase a charger(s)that allows charging up to 5 amps, such as the Integy 16X3-Pro v2.5VESC or Novak Millennium. However, for backyard bashing or sportuse, charging packs at lower amps (3 to 4) provides good performanceand extends battery run time in comparison to charging at higheramps. Also, battery packs that are charged at lower amps have anincreased life expectancy in comparison to packs charged at higheramps
It is not difficult to choose between the type of the battery pack to bepurchased. NiCad or NiMH battery packs both work fine in the E-MaxxHowever, people that have a low budget NiCD charger with a timershould stick with NiCD packs because these timed chargers were notdesigned to properly charge NiMH packs.
Further, NiMH packs can be destroyed by excessive heat. So oneneeds to be careful not to overcharge NiMH battery packs! NiMH packsare fully charged when they feel slightly warm. For charging NiMHpacks, a peak detection charger designed for NiMH batteries is recommended.
1/10th Nitro
