Indoor flying is a balance between the power of the motor for the weight it adds to the overall model weight, and duration times. As the biggest single weight is the motor / battery combination, it stands to reason that the lightest and most efficient set-up will have your model flying at its best.
Lithium Polymer - LiPo battery packs offer this efficiency, but at a greater cost than brushed motors and NiCad or MiMh. You can of course swap over to one of these technologies without going all the way and buy both.
Below, are a few battery items we have found, and mostly tested ourselves...... and offer these findings up for your enjoyment.
LiPo battery packs that we currently use for indoor models to follow...................
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Lithium Polymer batteries 135 maH 200 maH Click the underlined links on the left.
We have a supplier in Hong Kong that can supply all of these items at a greatly reduced price over the UK supply price.
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These are the same size as
other makes of 135maH single cells available from all over the world.
A model of around 25grams can obtain flights of over 20 minutes with
this cell installed.
The cell comes with tinned flat connections, ready for you to solder your own battery connectors. These are bare cells, with no heat shrink or any other physical protection. |
Specifications
HXT 135mAh 12-20C Single Cell
Dimensions: 21x30x3mm
Real tested weight: 4g
Voltage: 1.37v 1 cell LiPo cell
Current: 1.6 Amps constant - 2.7 Amps bursts
Users comments about
this battery
| Thomas - Perfect replacement in X-Twin |
| I bought 10 of these LiPo's to use as replacement for the original
battery in my Silverlit X-twin planes. (charging at ~2C) These have high performance and a perfect fit. I had some left, and I made a 2S1P battery for my Micro-T (1:36 car). These small batteries performed very well in this car, and gave a 5-6 minutes runtime at speeds up to 35km/h (22 miles/h). Great battery for small RC applications. |
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These cells are similar in size and weight to the 135
cell, but have a vastly greater power capability. 2.4 amps constant
can be drawn from the cell, OR, fly a model with a less powerful motor
set-up for a longer flight, or numerous flights.
I have flown a model that normally flies for about 14 minutes, three times in one night on the same pack without a re-charge of the cell. |
Specifications
HXT 200mAh 12-20C Single Cell
Dimensions: 31x20x4mm
Real tested weight: 6.2g
Voltage: 1.37v 1 cell LiPo cell
Current: 2.4 Amps constant - 4.0 Amps bursts
| David |
| These are really tiny LiPo's they are great also! I'm not yet sure what's the C discharge rating yet but seems really good! I made the packs without any shorts! Besides that I will purchase more now that I know how to put them together without a problem! |
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| RODNEY ANTHONIES |
| These batteries are very good but I cannot solder the terminals? I use 1 on its own but I now need to join 2 . |
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| Grzegorz Turminski |
| Very good battery, I use single cells to feed receiver in small glider. it warrant 2h fly without charge. |
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| Mack Ho |
| Love these cells. Providing what I needed. Waiting for new stock to arrive to buy another 70 cells. |
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| Mikkovee |
| These seem to work well with 10g 18-11 2000kv Micro Brushless Outrunner. 2S pack, 7" prop and 85g plane. Enough power for 3D flying. I'll buy more of these. |
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| Kenneth Farrell |
| Used them in a Micro T, I wanted runtime, so I ran them in parallel.
Still enough volts to pop wheelies and a super long run time. Two will
fit fine |
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| Dr. Hanson |
| I have made a 2 cells pack 12,4g and tested it on my model(120g), with
motor that draw 5,5A max. and it work very well. I have also tested it
by discharge 2A constant and there are 205 mAh on it at 10C!! The
Voltage are better or the same as Kokham 350 and Hyperion 300 by
discharge with 2A? Hyperion 300 has only 225-240 mAh on my cells, used
approx. 20-25 times. I will by more HTX 200 next time.
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