Model Boat Mayhem

Please login or register.

Login with username, password and session length.
Pages: [1]   Go Down

Author Topic: battery for TX?  (Read 3026 times)

sunnybob

  • Guest
battery for TX?
« on: July 05, 2010, 04:27:44 pm »
My little transmitter runs on 8 x AA batteries. Aside from the cost of these, I worry that the duracell bunny will die when the boat is a long way out, so i want to fit something with a bit more meat.

I can build a box that holds everything, but is it ok to run this thing with a 12volt 2.4Ah lead acid battery?

this is an old fire alarm battery, reasonably compact, and should last for a week without stopping (and I can get another for free! {-) {-) ).

On the side of the battery it says.... valve regulated, sealed lead acid type rechargeable battery.
 
Logged

essex2visuvesi

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 6,147
  • Location: Finland, England, Finland!
Re: battery for TX?
« Reply #1 on: July 05, 2010, 04:30:01 pm »
Try your local pound shop for rechargables.... last time i went they did packs of NimH AA and AAA cells for a pound
Logged
One By One The Penguins Steal My Sanity
Proud member of the OAM  (Order of the Armchair Modeller)
Junior member of the OGG  (Order of the Grumpy Git)

sunnybob

  • Guest
Re: battery for TX?
« Reply #2 on: July 05, 2010, 04:37:59 pm »
Quote from: Essex2visuvesi on July 05, 2010, 04:30:01 pm
Try your local pound shop for rechargables.... last time i went they did packs of NimH AA and AAA cells for a pound

Nah, I live in Cyprus. nothing electrical is cheap here  <*< <:( and like I say, this battery (and all replacements) is FREE! {-) O0 O0 ;D
Logged

Shipmate60

  • Global Moderator
  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 5,866
  • You bark - I will bite!!!
  • Location: Ivverkip, Inverclyde.
Re: battery for TX?
« Reply #3 on: July 05, 2010, 04:46:29 pm »
Yes the 12 volt batter you want to use will be fine.

Bob
Logged
Officially a GOG.

essex2visuvesi

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 6,147
  • Location: Finland, England, Finland!
Re: battery for TX?
« Reply #4 on: July 05, 2010, 05:55:22 pm »
Quote from: sunnybob on July 05, 2010, 04:37:59 pm
Nah, I live in Cyprus. nothing electrical is cheap here  <*< <:( and like I say, this battery (and all replacements) is FREE! {-) O0 O0 ;D

lol cant beat free, didnt realise you were in cypruss
Logged
One By One The Penguins Steal My Sanity
Proud member of the OAM  (Order of the Armchair Modeller)
Junior member of the OGG  (Order of the Grumpy Git)

Circlip

  • Full Mayhemer
  • *****
  • Offline Offline
  • Posts: 4,640
  • Location: North of Watford, South of Hadrians wall
Re: battery for TX?
« Reply #5 on: July 05, 2010, 06:47:59 pm »
See if you can get the charger that is fitted into the fire alarm OR burglar alarm case that goes with the battery, they are a special constant current charging type NOT yer normal Lead/Acid car/motorbike charger.

  Regards  Ian
Logged
You might not like what I say, but that doesn't mean I'm wrong.
 
What I said is not what you  think you heard.

sunnybob

  • Guest
Re: battery for TX?
« Reply #6 on: July 05, 2010, 07:35:21 pm »
Quote from: Circlip on July 05, 2010, 06:47:59 pm
See if you can get the charger that is fitted into the fire alarm OR burglar alarm case that goes with the battery, they are a special constant current charging type NOT yer normal Lead/Acid car/motorbike charger.

  Regards  Ian

i use a bigger 7a/hour fire alarm battery in the boat itself, and have recharged that several times with my bike automate charger. The first time was when the battery was over 7 years old and flatter than my pancakes. it took several days to reach charge but has been good as gold ever since. %% %%
Logged

sunnybob

  • Guest
Re: battery for TX?
« Reply #7 on: July 05, 2010, 07:36:00 pm »
Quote from: shipmate60 on July 05, 2010, 04:46:29 pm
Yes the 12 volt batter you want to use will be fine.

Bob
Thats just what I wanted to hear. :-)) :-)) ;)
Logged
Pages: [1]   Go Up
« previous next »
 

Page created in 0.014 seconds with 17 queries.