Topic: Are these any good for the Micro 4 Site

Just found this on your site and wondered if they are up to the currents required for the Micro 4 Site as it recomends 150mha but doesn't give a C rating 

Robot Birds

Also do you do single leads so I can make up a charger. I have a 3 cell balancer I was going to convert to allow me to charge 3 at a time off my normal charger  

Thanks

Hi mate,

We'll be trying the batteries out and reporting back, so watch this space!

As for leads, I think this is what you're after Robot Birds

cheers

Also do you do single leads so I can make up a charger. I have a 3 cell balancer I was going to convert to allow me to charge 3 at a time off my normal charger 

I'd be very careful doing that. Balancers normally have a limited balance current of between 200 and 500mA, but within this limit the balance current isn't controlled on some chargers. No a problem for most uses, because your charge current will be much higher than this. But when you're charging a 150mAh cell at (say) 150mA some chargers will still deliver a 200-500mA "balance" current if the cells are in different charge states. Charging a 150mAh cell at 500mA won't do it much good...

PDR

Hi mate,

We'll be trying the batteries out and reporting back, so watch this space!

As for leads, I think this is what you're after Robot Birds

cheers

Thank you, thats what I was after. I will wait for your feedback on the battery.

I'd be very careful doing that. Balancers normally have a limited balance current of between 200 and 500mA, but within this limit the balance current isn't controlled on some chargers. No a problem for most uses, because your charge current will be much higher than this. But when you're charging a 150mAh cell at (say) 150mA some chargers will still deliver a 200-500mA "balance" current if the cells are in different charge states. Charging a 150mAh cell at 500mA won't do it much good...

PDR

Definately agree with a normal balancer that operates independently but the one I was thinking of using is this Al's Hobbies - DualSky Li-Po Balancer 3S (3cell) so if I limit my charger too 100mha (only has 100mha increments) then I think it should be o'k. What do you think?

Definately agree with a normal balancer that operates independently but the one I was thinking of using is this Al's Hobbies - DualSky Li-Po Balancer 3S (3cell) so if I limit my charger too 100mha (only has 100mha increments) then I think it should be o'k. What do you think?

Agreed - as it's a series balancer it can't inject more than the overall charge current into any one cell. But by the same token it will probably only charge the most empty cell until they are in balance, so if you have three psrt-used ones and a single nearly-empty one they charge time for ALL teh cells will be that required to charge to emptiest one. This is fine if you're charging up a batch of batteries for the NEXT flying session, but is a right pain in the butt for recharging during flying sessions. Eflite make the 4-way charger that (as I understand it) charges fully independantly, so the part used cells will be available long before the empty one is charged. In fact this is the charger that comes with some versions of the the 4-site and Blade MSr.

Depends how you want to use it as to which is the better bet!

PDR

so if you have three psrt-used ones and a single nearly-empty one they charge time for ALL teh cells will be that required to charge to emptiest one. This is fine if you're charging up a batch of batteries for the NEXT flying session, but is a right pain in the butt for recharging during flying sessions.

Very good point 

I ordered the 4 Site that came with the nice charger but the ones that arrived at my LMS were the version with no batteries or the charger  and out of the 30 they had by the time they got to me on the list there were only 2 kits left so I just took what they had as I didn't want to risk waiting for the next batch. It may well turn out to be a good investment to buy the charger seperately  Knowing me I will break this model pushing it beyond the pilots abilities so when I buy a replacement I will try and get the one with the 4 way charger.

Hi

I have made a charging system for charging multiple small cells through the balance connector of a Hyperion 0606 charger and using the available charge sockets. The lowest current selectable is 100mah but I have used 200mah on 110mah cells to charge 3 at a time . This works but what is not possible to check is does it reduce the life cycle. The single cells sold with most micro are rated about 12c discharge but 4c charge. The supplied AA powered chargers charge the 70-110mah in about 15-20min and I found that conventional chargers do not work much better.

In practice its best to use the supplied or dedicated chargers . If you have 3-4 cells you will get almost constant flying . The one with the BNF 4site or Msr is a good deal and we can break up a set if you only need charger and main adaptor.

The low priced lipo we sell - 110 and 138mah have been tested with success on Ember,Vapor, and all Kyosho 3ch models and work well . Also on Blade Msr,Mcx.

I have tried on the Kyosho Edge 4ch and a scratch built micro with brushless where the current is higher and the cells are on the borderline. On a full throttle prop hang they they will run out of puff. On the 4-site the feedback has been that the total power demand is just met with the 150mah lipo .

The route I will be trying out is with third party lipo the new 180mah G3 with the compatible connector at the next available indoor .

Will keep you informed.

Andy
Robotbirds

Do you do the leads from the battery, I've got a couple of 200 mah 20c single cells but I need to put a plug on them.

Hi Frank,

I believe this is what you are after battery plugs

Cheers

Hi Frank,

I believe this is what you are after battery plugs

Cheers

Ah missed this reply, thanks thats just what I'm looking for. Can't just order one of those though so when I've decided what else I need I'll put an order in............

has anyone tried 2 cells on the BNFs? ie two 70mah parkzone vapour cells.

has anyone tried 2 cells on the BNFs? ie two 70mah parkzone vapour cells.

Not to my knowledge. Even if the RX and servos could handle the voltage the massively increased cureent from the motor would at least cause the motor to get hot and I would have thought a strong possability it would cook the built in ESC. Also the increased current may be too much for the cells, the single cells seem to be on their limit. I would suspect you would have to change the motor/gearing/prop 

has anyone tried 2 cells on the BNFs? ie two 70mah parkzone vapour cells.

I take it you mean as as 2p to give a 140 mah battery. Might work but the 70mah batteries are about the same size as the 130 mah so it would be a bit of a weight increase and you'd need to connect them together.

Just found this on your site and wondered if they are up to the currents required for the Micro 4 Site as it recomends 150mha but doesn't give a C rating

Robot Birds

Also do you do single leads so I can make up a charger. I have a 3 cell balancer I was going to convert to allow me to charge 3 at a time off my normal charger 

Thanks

Hi,

try these cells for the 4 site... they are brilliant.

Robot Birds

They can also be charged at 5C...3 is the highest I've gone to ..thats quick enough for me

You'll  also need to buy the lead to solder on to it .

Shaun

Thanks for the heads up Shaun, I feel an order on its way 

I actually had a go of some sample 25c single cell 120mha packs but done with the normal sockets for these models and it gave at a guess 15-20% more power so I am assuming these will do the same. Unfortunately I couldn't keep the sample and not sure when they will hit the shops

Hi Sizz..

they also have these, now in stock but I haven't tried them...

Robot Birds.

If there as good as the other on I suggested they should be good as well.. but you are paying more...

Shaun

Hi Sizz..

they also have these, now in stock but I haven't tried them...

Robot Birds.

If there as good as the other on I suggested they should be good as well.. but you are paying more...

Shaun

I need some of those then I can fit them in my MSR too, thanks for that 

Hi All

I have now tested the new G3 Hyperion 130 single cell with UM plug (the little white plug) on a range of models .

The results are promising with good current available and they do not cut out on the more demanding models like Kyosho Extra AD and 4-Site. You will lose a bit on the duration but gain on performance.

A problem area is the single cell brushless conversions , Parkzone Sukhoi and the new  Freeair Blade Nano where the power requirements are pushed on the small 1cell lipos. These 130 G3 do provide the punch and the Blade Nano with 4gm brushless motor and AR6400 system .

Andy
Robotbirds.
 

A problem area is the single cell brushless conversions , Parkzone Sukhoi and the new  Freeair Blade Nano where the power requirements are pushed on the small 1cell lipos. These 130 G3 do provide the punch and the Blade Nano with 4gm brushless motor and AR6400 system .


 

Have you guys tried converting a Micro 4 Site to brushless yet  I hear talks of poeple trying but not found anyone who has 

When you get down to these sizes and single-cell operation the advantages of brushless can be minimal (or even negative). The current-drain of the microcontroller in the ESC can easily exceed the difference between the brushless motor's current an that of a similarly-sized (coreless) brushed motor.

PDR

When you get down to these sizes and single-cell operation the advantages of brushless can be minimal (or even negative). The current-drain of the microcontroller in the ESC can easily exceed the difference between the brushless motor's current an that of a similarly-sized (coreless) brushed motor.

PDR

I wasn't aware of that. I have seen some 3 phase motors claiming 60g of thrust drawing 1.5 amps  which is about the same current as the geared motor but I'm guessing that produces 45g max from the way mine prop hangs. It's probably gearbox losses that make the difference