Old nmh battery

[xviper]

A question for you. I see 2 sets of wire plugs from the lipo battery. Why 2?

The twin wires are the power leads that plug into the plane and give it juice and also for charging - that's where the power goes in as well as come out. The multiple wires ending in a white connector is the balance plug. It's used when charging or if you wish to plug in a device like a voltage alarm when flying.

[thehorse]

A question for you. I see 2 sets of wire plugs from the lipo battery. Why 2?

[thehorse]

I'd like to thank all of you for sending me many new exciting ideas. After a long absence from RC I'm back at it. Buying new charger, planes and many accessories. Thanks again.

[WintrSol]

Since lipo batteries have a higher density, you could even get one with a greater mAh capacity, and still be lighter than a 6 or 7 cell NiMH battery of 900mAh capacity. Flight time would be longer, without sacrificing handling.

Of course, going to a lithium-based battery would require a charger to match.

[DivenParker]

It is recommended to 8.4V 900mAh NiMH Battery. You also can choose 2s lipo battery with about 900mAh capacity.

[WintrSol]

There are also LiFe batteries (2S 7.2V) that are rated for flight power, like A123 types. A little larger and heavier than the equivalent rated LiPo, but still smaller than your NiMH, and may be a better match to the power system.

[xviper]

Basically, you need to consider the following:
1. The plane needs ~7.2V.
2. It needs ~900mah
3. The kind of connector the battery requires to hook up to the plane.
4. A suitable charger to deal with LiPo batteries.
The current state of RC plane battery tech is the LiPo (Lithium Polymer), so look at some of the offerings there. You can use a 2 cell, 7.4V LiPo. So as to not change the balance of the plane, you should pick a LiPo that is approximately the same weight as your old battery. Since LiPo tend to be more efficient, they weigh a little less and are physically smaller than a NiMH of the same output. This is good for you because a higher mah LiPo will give you a bit more flight time. Check here to see what might be suitable for your plane:

https://www.motionrc.com/collections/lipo-batteries?_=pf&pf_t_number_of_cells=2%20Cell%20(2S)%207.4V

If you can solder, you can easily change the connector on the plane or the battery to match each other. Weigh your old battery to see how best to approximate the weight.

[thehorse]

I have a 7.2v 900 mAh battery for a Skyfly and would like to upgrade it to something newer. It's a 6pack battery 30/50/50 mm. Looking forward to ideas