can you give me an opinion about my 12V starter battery ?

[FuturaSE]

currently im using this battery and starter

the battery is fully loaded and iv measured it : 12.43 V

should be ok however when using the starter i can easily stop the starter from turning with a few fingers
so i couldnt start up my helicopter

then iv connected the starter with a car battery and its a complete difference i can barely stop the starter from turning with my hand

question 1: is it possible the battery is not ok anymore ( 8 years old )

question 2: can you recommend me a good 12V battery for using with this starter, if possible not any bigger it has to fit in my startbox

ty, greetz

DSC_0071.jpgDSC_0070.jpg

[trillian]

Sounds like the battery is just not capable of enough amps. I use a 4 cell LiPo with my starter and it works very well and I can even use a 3cell LiPo sometimes depending on the engine. Do you have a charger that can charge 3 or 4 cell LiPos?

[KevDavies]

get a 4s lipo, Ive used them on my starters for years. Would start the titanic with one of them! LOL

[FuturaSE]

here you can see my charger, let me know what to do

DSC_0072.jpg

edit: i also do need to use this battery for the controlpanel and fuel pump in my startbox

[FuturaSE]

feels like some answers have come to me:

no the charger is not for lipos
for my startbox i do need a 12V battery for controlpanel and fuelpump, so question is this also possible with a lipo battery?

changement does require i buy a lipobattery and new charger!

hm again it seems i do have to spend money
or find a new 12V battery with some more A

maybe something like this: huh over 5000 grams sounds heavy

http://www.quartel.nl/webshop/produc...?id=KOHP17-12W

[buckers]

I have a similar set up to you FuturaSE. I had the same problem. I just changed the battery and it all worked again. I asked the company that made the new battery what current I could charge at. They said no more than 1 amp (Pb battery) I appreciate that your old/new battery will not be the same as mine, but the charge limit is a good starting point. (I have since got a Align starter), but my original setup is still working fine.
HTH

[Skyfool]

Can you compaire your starter to one known to be good? Nitro starters are not overly powerfull so you don't damage your engine if you suffer a hydrolic lock. A 12v battery with more A won't give your starter more power unless your original 12v is on it's way out, more A just means it won't need charging as often. If you want a powerfull stater have a look at the Dynatron D-SLN16 | SULLIVAN DYNATRON STARTER (L-SLN603) The are expensive but will start anything, I've used one to start a YS 140 four stroke

[FuturaSE]

Can you compaire your starter to one known to be good? Nitro starters are not overly powerfull so you don't damage your engine if you suffer a hydrolic lock. A 12v battery with more A won't give your starter more power unless your original 12v is on it's way out, more A just means it won't need charging as often. If you want a powerfull stater have a look at the Dynatron D-SLN16 | SULLIVAN DYNATRON STARTER (L-SLN603) The are expensive but will start anything, I've used one to start a YS 140 four stroke

the starter is ok when connected with car battery it works great, the problem must be the battery

good tip about the A info, didnt know tx

[FuturaSE]

ok did make a decision
going to replace the battery with this one:

NP7-12 Yuasa 12V 7AH Battery

need to watch my money
will visit the shop at my place next week, also in need for fuel which cannot be send by post