Still Using NIMH Batteries

[Santa Cruz]

I prefer to still use NIMH batteries. They are safe, pack plenty of punch for my use. I use 2000 MAH in transmitter and receiver packs. I use 4.8 volt for Tx and 6 volt for Rx packs. I get 6 ten minute flights per outing, and that's all i want. I am happy.

Safety is #1 priority for me. I have seen first hand what lipos are capable of doing. NIMH do everything i need, are safe, and pack enough power for my giant aircraft.

 

[LitterBug]

My radios have 18650 and 21700 Li-Ion holders. I can go all day without having to plug in and charge. I can also swap out the cells should I have a super crazy amount of flying in a day. Energy density is hard to beat with Li-Ion. I have some 18650 3500mah and 21700 5000/10,000mah packs as well and can get flight times of over an hour from some of my powered planes.

 

[bisco]

what are you using for the motor?

 

[Piotrsko]

Hey @LitterBug what happens when you short them? Overcharge? Don't answer, I know what happens.

Nimh also recover from full dead, dump as much current into a short as does lithium. They are just heavier and bulky and don't overcharge

 

[bisco]

and therein lies the problem

 

[LitterBug]

Hey @LitterBug what happens when you short them? Overcharge? Don't answer, I know what happens.

Nimh also recover from full dead, dump as much current into a short as does lithium. They are just heavier and bulky and don't overcharge

Oh....

Must...

Not....


Answer....

 

[Bricks]

Oh....

Must...

Not....


Answer....

Me to woefully broad statement made abut lithium's and Lipo`s.

 

[LitterBug]

Why would I want to short them or overcharge them? I have never needed to nor wanted to.

I can get an hour of flight time from a 2S Li-Ion pack flying FPV and <250g. All without shorting out or overcharging my batteries.

 

[LitterBug]

I do have one NiMH pack. It came with my Traxxas Slash 1/10. Good starter battery. Slow to charge, quick to run low and sag. Replaced it with a hard shell 2S Li-Ion. Runs SO much better, and for longer in the same amount of space.

STOCK: 7 Cell NiMH 3000mah. Weight: 417g
LIPo: 2 cell 6500mah Weight:317g

LiPo = Less weight, more than double the capacity, Higher discharge rate...

Energy density For The Win!!


it would be very difficult to fly with the weight of NiMH

 

[Bricks]

I prefer to still use NIMH batteries. They are safe, pack plenty of punch for my use. I use 2000 MAH in transmitter and receiver packs. I use 4.8 volt for Tx and 6 volt for Rx packs. I get 6 ten minute flights per outing, and that's all i want. I am happy.

Safety is #1 priority for me. I have seen first hand what lipos are capable of doing. NIMH do everything i need, are safe, and pack enough power for my giant aircraft.

Are using them for just to power your receiver and not an electric motor this is what I am getting from your post. I have switched over my NIMH batteries to LifePO4 batteries totally different then LIPO batteries in my gas and nitro planes. Lighter faster charging and do not discharge on their own so quickly.

 

[Santa Cruz]

Yes to power my receiver, i am aware of Life04 , yes different than Lipo. Just the same NIMH work just fine for what i need. They cost less, don't have to worry about capacity. I just cycled 3 2000mah packs which are 4 years old are still showing over 2000mah. On my smart charger if they are low on charge 4.8v 15 minutes to charge 6.0v 20-25 minutes. I always charge my batteries TX RX each time right before i go to the field.

NIMH no need to take out of plane, or put them in explosion bag while charging. Safe, economical and do the job i need.

 

[bisco]

if you were flying electric, you might feel differently. i used to fly nicad back in the day

 

[Santa Cruz]

if you were flying electric, you might feel differently. i used to fly nicad back in the day

I don't like electric, I only have one electric and that's for indoors only for the winter months. We fly at a high school that has back to back gyms, they open the centre door we have both gyms to fly in. I am not an electric fan at all.

 

[bisco]

to each his own. i now understand your thoughts on batteries