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Battery question...
- Thread starter gopher
- Start date
losilover
Quarry Creeper
free shipping, 5 of them for 10 bucks, and no tax? this screams weird scam.
BOZINATOR
Newbie
Gopher,
Some people call them the black label lipos.They are the same exact ones that hobbypartz has for about $4.50 each and 4.95 shipping. You need to check the polarity (I just swapped the leads at the connector) I have 20 of these little guys and use them on my crawlers and now on the two DTs I just bought..I just ordered 6 more last night for the DTs. You need a 1 cell lipo charger...I bought the electrifly poly charger . 4 adjustable output..set mine at 300ma and charge 4 batteries at a time with no worries. Had I known....."thumbsup"
jim
I just noticed the date code of 2007 ....old stock for sure be careful
Some people call them the black label lipos.They are the same exact ones that hobbypartz has for about $4.50 each and 4.95 shipping. You need to check the polarity (I just swapped the leads at the connector) I have 20 of these little guys and use them on my crawlers and now on the two DTs I just bought..I just ordered 6 more last night for the DTs. You need a 1 cell lipo charger...I bought the electrifly poly charger . 4 adjustable output..set mine at 300ma and charge 4 batteries at a time with no worries. Had I known....."thumbsup"
jim
I just noticed the date code of 2007 ....old stock for sure be careful
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krono7s
Quarry Creeper
do u wanna sacrifice the volts? i love the 7.4v lipo... but to answer ur question, yeah, they will work
willy1106
Pebble Pounder
i been trying a 3.7 v 500mAh and cant get it to work for me. not sure what is wrong
BOZINATOR
Newbie
Please explain..not working for you.
Are you using a 1 cell (3.7v) charger?....current setting?
Are you using the right charging method for the type of battery you have?
Do all batteries you use act the same way?
A lot of the 3.7 volt batteries are actually 2 batteries in parallel (don't need balancing) just FYI
video?
pictures?
jim
Are you using a 1 cell (3.7v) charger?....current setting?
Are you using the right charging method for the type of battery you have?
Do all batteries you use act the same way?
A lot of the 3.7 volt batteries are actually 2 batteries in parallel (don't need balancing) just FYI
video?
pictures?
jim
JeepinOR
Rock Crawler
Just ordered a set of 5. For $9.99, it's worth the gamble! "thumbsup"
I like the wheel speed from a 7.2v a 2s, but I'm looking forward to a bit more precision on the lower end...
I like the wheel speed from a 7.2v a 2s, but I'm looking forward to a bit more precision on the lower end...
Dogbreath
Rock Crawler
The only problem I see with the cells in the link are that they are only 10C....I use a lot of 1S 3.7V batts but like the C rating to be 20C....you'll get better performance
willy1106
Pebble Pounder
Well the battery I'm using is one I found in a cordless phone. It's a 1s 3.7v I seen others soldering connectors to odd batterys so I figured I'd give it a try. I soldered a micro dean to it and made an adapter it use my losi wall plug for my lipos. I used a volt meter and it reads 3.8v after charging. When I plug it into the car I can hear a noise out ove the servo but no functions. I can't recall if I got a lite on the esc I think it was a red lite but no forward reverse or turn. I'll take pics after work
willy1106
Pebble Pounder
And all my other 7.4 lipos work just fine
BOZINATOR
Newbie
will,
the battery should be 4.2 volts when fully charged......Sorry Will .....You need a 1 cell 3.7 volt charger to make it work not a two or three cell charger. If it can't sense that what it is charging is the wrong battery, you may have stressed.....yup the battery:shock:
jim
the battery should be 4.2 volts when fully charged......Sorry Will .....You need a 1 cell 3.7 volt charger to make it work not a two or three cell charger. If it can't sense that what it is charging is the wrong battery, you may have stressed.....yup the battery:shock:
jim
VredenCrew
Newbie
Tower Hobbies has a cheap 1S charger. It is a Heli-Max AC charger for $13. Go to the heli sectio and look under lipo chargers.
ya dog, was looking for something like that as well.
really want to jump to the lipo scene @ the cheapest place possible since the wife has been watching me with these little trucks
JeepinOR
Rock Crawler
There are plenty of selections for lipos that are inexpensive; you may not get a deal for 5 at a time, though.
This was my first lipo (2s) for my McRC. It works great (not the best killer deal, but not bad).
I've been using this charger to charge all my batteries: works great, good price, and it's diverse (Nimh, NiCd, Lipo, Li-Ion, Life; AC/DC).
This was my first lipo (2s) for my McRC. It works great (not the best killer deal, but not bad).
I've been using this charger to charge all my batteries: works great, good price, and it's diverse (Nimh, NiCd, Lipo, Li-Ion, Life; AC/DC).
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ya... looking at all the options... think I might stick with something I trust @ first... but... seriously... is this safe/ recommended?
talking about the multiple lines going in to one charger...
thanks for the charger link too, not sure which one I'll go with... I'm mad as I had a great charger that would do nicad/nimh/lipo and sold it with my last 2.2 awhile ago
talking about the multiple lines going in to one charger...
thanks for the charger link too, not sure which one I'll go with... I'm mad as I had a great charger that would do nicad/nimh/lipo and sold it with my last 2.2 awhile ago
BOZINATOR
Newbie
Gopher,
Batteries are charged in parallel all of the time. That is not really a problem...what is....batteries that are discharged at different times then trying to charge all together. There are two 300ma batteries wired in parallel in each of the packs. They are discharged to the same voltage (in a perfect world) so they will charge to the same level. All of my batteries are slow charged to "balance the voltage..sort of" before I ever use a battery of any chemistry. If your charger cuts off at 4.2v ...any one of the batteries can stop the charging on the other batteries by reaching 4..2v first. While this is a generalization to describe the effect of charging batteries in parallel...every charger will have different ways and components to accomplish the charging. If you stick a bunch of batteries in parallel, they will fight each other..charging some discharging others....until it stabilizes (never) That's why lipos in parallel kill themselves. That is why you have balance ports (sensors for each battery)
Yes.....you can charge them all in parallel, but understand you will not get the use out of them you might think. How much current for 16 batteries in parallel?...yeah me neigher.
jim
Batteries are charged in parallel all of the time. That is not really a problem...what is....batteries that are discharged at different times then trying to charge all together. There are two 300ma batteries wired in parallel in each of the packs. They are discharged to the same voltage (in a perfect world) so they will charge to the same level. All of my batteries are slow charged to "balance the voltage..sort of" before I ever use a battery of any chemistry. If your charger cuts off at 4.2v ...any one of the batteries can stop the charging on the other batteries by reaching 4..2v first. While this is a generalization to describe the effect of charging batteries in parallel...every charger will have different ways and components to accomplish the charging. If you stick a bunch of batteries in parallel, they will fight each other..charging some discharging others....until it stabilizes (never) That's why lipos in parallel kill themselves. That is why you have balance ports (sensors for each battery)
Yes.....you can charge them all in parallel, but understand you will not get the use out of them you might think. How much current for 16 batteries in parallel?...yeah me neigher.
jim
SpeedyG
Quarry Creeper
I 've been running 2s 200mah lipos in my micros since their humble beginnings... Put one in my MRC the first day i had it, never had a problem... The only thing with the stock ESC is there's no cutoff for lipos so you have to be careful how long you run them... Check out http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220609138630&ssPageName=STRK:MEWAX:IT
These are a little better than the ones I use... Snug fit too, but they'll work... As for a charger, check out HobbyKing... Lots of cheap Accucell chargers on there, able to charge any battery you got and more!!
Going Lipo is the easiest mod you can do (just plug it in!) and the extra power you get from those few extra volts makes a big difference in how it performs, just as long as you keep an eye on the motor temp (mine got up to around 150 degF) and shut 'er down when the unit starts losing speed and power (keep it above 6V) and you'll be OK...
These are a little better than the ones I use... Snug fit too, but they'll work... As for a charger, check out HobbyKing... Lots of cheap Accucell chargers on there, able to charge any battery you got and more!!
Going Lipo is the easiest mod you can do (just plug it in!) and the extra power you get from those few extra volts makes a big difference in how it performs, just as long as you keep an eye on the motor temp (mine got up to around 150 degF) and shut 'er down when the unit starts losing speed and power (keep it above 6V) and you'll be OK...
BONZINATOR: thanks for the info... I had a feeling that you could charge them like that, but ya, my thinking was it wasn't 'healthy' for the batteries... I dont think I'd ever try it myself.
SpeedyG: I'd look in to a better ESC if again I could find a good deal and sneak it by the wife. If my two local hobby shops weren't always on the high end, I'd buy from there and just install when she is out running
I'll get there someday, lol
SpeedyG: I'd look in to a better ESC if again I could find a good deal and sneak it by the wife. If my two local hobby shops weren't always on the high end, I'd buy from there and just install when she is out running
I'll get there someday, lol
JeepinOR
Rock Crawler
You meant McRC, I'm sure; to help avoid confusion:
MRC = No Lipo cutoff, stock
McRC = 2s Lipo cutoff
SpeedyG
Quarry Creeper
This is the one I use... http://cgi.ebay.com/Quark-Universal...Control_Parts_Accessories&hash=item3a5b95c2ea
Honestly, you probly couldn't find it for a better price anywhere... for under $30, it's perfect for lots of micros... I'm sure the wife would understand... just find a really low kV motor ( 3850-4500kV) that measures 12mm diameter by 30mm long and you'll be stylin'!! $40 to go brushless is an awesome upgrade that I would recommend to everyone... More power, longer runtimes, custom programming, I'm not seeing any drawbacks... (unless the wife holds onto your wallet... that could get ugly!! haha...:ror
Just something to consider when (not if!) you decide to go lipo... Brushless and lipo go together like peanut butter and jelly dude... The full benefits of lipo technology can be better realized and appreciated thru the application and use of advanced ESC and motor technology... Once you go brushless you'll never go back..."thumbsup"
Honestly, you probly couldn't find it for a better price anywhere... for under $30, it's perfect for lots of micros... I'm sure the wife would understand... just find a really low kV motor ( 3850-4500kV) that measures 12mm diameter by 30mm long and you'll be stylin'!! $40 to go brushless is an awesome upgrade that I would recommend to everyone... More power, longer runtimes, custom programming, I'm not seeing any drawbacks... (unless the wife holds onto your wallet... that could get ugly!! haha...:ror
Just something to consider when (not if!) you decide to go lipo... Brushless and lipo go together like peanut butter and jelly dude... The full benefits of lipo technology can be better realized and appreciated thru the application and use of advanced ESC and motor technology... Once you go brushless you'll never go back..."thumbsup"
