Brand | melasta |
---|---|
Manufacturer | Melasta Coporation Limited |
Model Name | MELASTA 8 4V 4200mah |
Part Number | RC84-NH42-TR |
Voltage | 8.4 Volts |
Batteries included | No |
Batteries Required | No |
Battery Capacity | 4200 Milliamp Hours |
Battery Cell Composition | NiMH |
Manufacturer | Melasta Coporation Limited |
Manufacturer reference | RC84-NH42-TR |
Product Dimensions | 14 x 4.67 x 4.45 cm; 490 g |
ASIN | B01HO8QUQI |
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Melasta 8.4V 4200mAh 7-Cell Hump NiMH Battery Pack Compatible with Traxxas RC Racing Car
Purchase options and add-ons
Brand | melasta |
Battery cell composition | NiMH |
Battery capacity | 4200 Milliamp Hours |
Unit count | 1 Count |
Voltage | 8.4 Volts |
About this item
- Parameter:Voltage: 8.4v,Capacity: 4200mAh,Battery Type: NiMH
- Structure: built with 7 MELASTA Racing Cells
- Compatible with: popular standard 8.4V RC racing cars
- Standard Dimension: 140 x 46.8 x 44.5(Hump Hight)mm / 5.51 x 1.84 x 1.75 inch
- Warranty: 35- DAY return policy and 1 Year maintenance
Frequently bought together

Product information
Technical Details
Additional Information
Date First Available | June 28 2016 |
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Customer Reviews |
4.3 out of 5 stars |
鶹 Rank |
|
Is discontinued by manufacturer | No |
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This Item ![]() Melasta 8.4V 4200mAh 7-Cell Hump NiMH Battery Pack Compatible with Traxxas RC Racing Car | Recommendations | |||||
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Price | -5%$37.04$37.04 Was: $38.99 | $39.49$39.49 | $25.99$25.99 | $91.03$91.03 | $43.99$43.99 | $37.99$37.99 |
Delivery | Get it by Wednesday, Jun 25 | Get it by Wednesday, Jun 25 | Get it by Wednesday, Jun 25 | Get it Jul 2 - 10 | Get it by Wednesday, Jun 25 | Get it by Wednesday, Jun 25 |
Customer ratings | ||||||
Sold by | Melasta Corporation Limited | PCEONAMP Store | Melasta Corporation Limited | Golda's Kitchen | Melasta Corporation Limited | Nastima |
capacity | 4200 milliamp hours | 3000 milliamp hours | 1600 milliamp hours | 4200 milliamp hours | 4200 milliamp hours | 4000 milliamp hours |
battery quantity | — | 2 lithium ion, 2 lithium ion | 1 nonstandard battery | 1 product specific | — | 1 unknown |
voltage | 8.4 volts | 7.4 volts | 7.2 volts | 8.4 volts | 8.4 volts | 7.2 volts |
re-usability | Rechargeable | Rechargeable | Rechargeable | Rechargeable | Rechargeable | Rechargeable |
From the brand

-
Melasta was founded in 2008, our main products revolve around polymer lithium-ion, lithium-ion, NimH rechargeable batteries and chargers, etc.
Our mission is to be the leading developer and supplier of clean, rechargeable batteries and related products, battery systems and energy solutions.
We want to provide safe, reliable and efficient energy for more people.
Product Description



MELASTA battery, the first choice of car powertrain for toppest Formula SAE Racing Teams in the world since 2012 up to date.They are designed to meet power need of your racing car.Melasta mature NiMH technology enables conveniently charging at any time.
- High Capacity Battery
- Professional
- Widely Compatible
Specification
Battery Type: Ni-MH
Voltage: 8.4V
Real Capacity: 4200mah
Continus Discharge Rate : 10C
Continus Discharge Current : 42A
Volume: 140 x 46.8 x 44.5(Hump Hight)mm / 5.51 x 1.84 x 1.75 inch
Note: in order to make sure the battery is compatible with your racing car,please check the battery container size of your racing car before you ordered it!
High Capacity Battery
High power nickel metal hydride battery to achieve the best performance of the RC Cars. Melasta 8.4V NiMH battery pack has a high capacity rating of 4200mAh that can run your RC car and related applications much longer than OEM Battery.
Compatible Connector
Please make sure your connector plug is compatiblw. If you want other connector rc battery,like tamiya connector plug. Please refer to the product recommendation below. Just Click to jump to the product page you want, which saves you a lot of time.
Widely Compatible
Replacement for 8.4V RC Cars Battery Pack like RC Cars, RC Truck & RC Boat. Note: The 7-cell hump pack fits in all models except E-Maxx, Summit and E-Revo, which require a flat pack configuration.
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Customer Reviews |
4.4 out of 5 stars 678
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4.5 out of 5 stars 827
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4.2 out of 5 stars 275
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Material | ✓ | NiMH | NiMH |
Voltage | ✓ | 7.2V | 9.6V |
Capacity | ✓ | 4200mAh | 2000mAh |
Size | ✓ | 5.39 x 1.88 x 0.95 inch | 3.99 x 2.31 x 0.59 inch |
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Customer reviews
Customers say
Customers like the battery's performance, power, and fit. They mention it lasts much longer than the brand ones, works extremely well on their Traxxas Rustler, and Slash. Some also say it's a good product. However, some customers have reported that the connector quality is not the same as the original.
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Customers like the battery life of the product. They mention it lasts much longer than the brand ones, is holding up to the same standard as it made when new, and is a perfect replacement for the equivalent Traxxas batteries at a much lower price.
"...Good product!" Read more
"Great battery and good price. That 7 cell makes the difference" Read more
"Great battery for our Traxxas Stampede, but my HiTec X1 charger cannot seem to detect when its fully charged and always cuts off at its own..." Read more
"Works just as it should and lasted for a long time" Read more
Customers are satisfied with the performance of the battery. They mention it works extremely well, lasts a long time, and works great with their Traxxas Rustler and Slash vehicles.
"Have purchased 4 of these over the years and had good results. Used in Traxxas Stampede 2wd...." Read more
"Works just as it should and lasted for a long time" Read more
"Works great and better alternative to expensive traxxas ones." Read more
"Pros: Works and last as I expected! Fits no problem with the car connector..." Read more
Customers like the power of the battery. They mention it has great power, decent run times, and good performance. They also say it's able to run the truck more by popping and swapping batteries.
"...Able to run the truck way more by popping and swapping batteries. Hold charge well, but need adapters to fit tot he truck. Cheap replacements...." Read more
"...I get decent run times with these...." Read more
"...Good run time. Will probably buy more in the future." Read more
"Very good power . Plug in is not the same as original, it is missing the orientation tab and plug could be reversed accidentally." Read more
Customers like the fit of the battery. They mention it's the same size and works great with the Traxxas charger.
"Perfect!" Read more
"...They are the same size and work with the Traxxas charger. They work great and charge well, from what I can see." Read more
"Good quality. Plug in fit perfect. Fast delivery." Read more
"Perfect fit works great" Read more
Customers are dissatisfied with the connector quality of the battery. They mention the plug end isn't what's described and the plug in is not the same as the original.
"...Cons: Has an old type 1st generation connector, has to shaved it to fit the Traxxas charger with latest connector...." Read more
"Battery works fine, but the plug end isn't what's described. It fits, but not exact." Read more
"Very good power . Plug in is not the same as original, it is missing the orientation tab and plug could be reversed accidentally." Read more
"these are horrible connectors to start off with, not traxxis compatible, you have to shave them with a knife to fit, and after 5-7 charges now dead,..." Read more
Reviews with images

Yes recommended and I am planning to buy more
Top reviews from Canada
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- Reviewed in Canada on May 2, 2025Verified PurchaseHave purchased 4 of these over the years and had good results. Used in Traxxas Stampede 2wd. Great alternative to purchasing overpriced OEM Traxxas batteries.
Good product!
- Reviewed in Canada on April 16, 2025Verified PurchaseGreat battery and good price. That 7 cell makes the difference
- Reviewed in Canada on October 2, 2024Verified PurchaseGreat battery for our Traxxas Stampede, but my HiTec X1 charger cannot seem to detect when its fully charged and always cuts off at its own protection limit. My other batteries do not cause this problem, so I know its the Melasta battery. If you don't have a charger with over charge protection you may want to keep a close watch on the battery and its temp while charging. However, The battery still does its job in every other aspect and I will buy again when I need some new packs for bashing around.
- Reviewed in Canada on May 22, 2025Verified PurchaseWorks just as it should and lasted for a long time
- Reviewed in Canada on July 3, 2024Verified PurchaseWorks great and better alternative to expensive traxxas ones.
- Reviewed in Canada on November 21, 2024Verified PurchaseThey are better than my traxxas battery. And a lot cheaper too. We'll worth it peeps!
- Reviewed in Canada on November 22, 2024Verified PurchaseBattery was charged twice with original traxas charger maybe got 30 minutes of run time off it then noticed it getting hot and it had burned the paint off one cell and started to separate. Not very impressed.
Battery was charged twice with original traxas charger maybe got 30 minutes of run time off it then noticed it getting hot and it had burned the paint off one cell and started to separate. Not very impressed.
Images in this review
- Reviewed in Canada on July 21, 2024Verified PurchasePerfect!