|
Sony NP batteries for 12v? |
Post Reply 
|
| Author | |
alphabetikal 
Registered User 
Joined: 20 May 2010 Location: UK Status: Offline Points: 217 |
 Post Options
 Thanks(0)
 Quote Reply
 Topic: Sony NP batteries for 12v?Posted: 12 June 2012 at 10:43am |
|
Hi,
An idea I have is to configure 2x Sony NPF970 Lithium ion Batteries for 12v. They are 6.6 ah each as far as i know. 2 batteries cost about £33 - generic ones. A charger is about £12. the reason im suggesting these is that I know they are very good batteries. They are commonly used in Sony TV cameras such as the XDCAM EX range. They are very durable and Ive known them to last up to 4-5hours on a shoot each with the Sony EX1. What do the more technically minded people think? One problem is how to harness them, but Im sure there is a way using some kind of adapter or pack out there, Or have I overlooked something obvious here??? a |
|
 |
|
|
alphabetikal
Registered User
Joined: 20 May 2010 Location: UK Status: Offline Points: 217 |
Post Options
Thanks(0)
Quote Reply
Posted: 12 June 2012 at 10:44am |
|
|
|
slaz
Old Croc 
Joined: 27 November 2009 Location: London E2 Status: Offline Points: 2713 |
Post Options
Thanks(0)
Quote Reply
Posted: 12 June 2012 at 11:48am |
|
.... and here's the price of the official Sony branded ones ....
http://www.sony.co.uk/product/cac-batteries---chargers/np-f970 .... yeah. Dunno how much difference there is in quality .... Can't see any reason why it wouldn't work, but seems like there's be some hoop-jumping wrt connectors etc. |
|
|
REMEMBER....POLITICIANS AND DIAPERS SHOULD BE CHANGED OFTEN AND FOR THE SAME REASON
|
|
|
|
|
alphabetikal
Registered User
Joined: 20 May 2010 Location: UK Status: Offline Points: 217 |
Post Options
Thanks(0)
Quote Reply
Posted: 12 June 2012 at 11:57am |
|
ive tested both - from other Sony NP batteries from smaller DV cameras- and can confirm there is probably only about 10% difference in capacity and maybe the same in lifespan.
Basically, Sony rips off the world once again. i also have generic batts for my panasonic GH1 camera - they are amazing and so much cheaper. Edited by alphabetikal - 12 June 2012 at 11:57am |
|
|
|
|
alphabetikal
Registered User
Joined: 20 May 2010 Location: UK Status: Offline Points: 217 |
Post Options
Thanks(0)
Quote Reply
Posted: 12 June 2012 at 12:01pm |
|
this is also interesting, by Hawks woods - but costs £200!
|
|
|
|
|
slaz
Old Croc
Joined: 27 November 2009 Location: London E2 Status: Offline Points: 2713 |
Post Options
Thanks(0)
Quote Reply
Posted: 12 June 2012 at 12:06pm |
Heh. You're not wrong there .... I enquired about the price of a drive to save EDL's from a Sony BVE900 edit controller once .... (talking over 20 years agpo here) ...... something over £1200 + VAT .... this was for what was really just a 1M floppy drive with a bit of custom firmware in a Sony-badged case. ....... yeah right. That was Sony Broadcast (UK) - used to be a completely separate company to Sony (UK) .... dunno if its still like that. |
|
|
REMEMBER....POLITICIANS AND DIAPERS SHOULD BE CHANGED OFTEN AND FOR THE SAME REASON
|
|
|
|
|
Briefcaseboombox
Registered User
Joined: 04 June 2012 Status: Offline Points: 17 |
Post Options
Thanks(0)
Quote Reply
Posted: 12 June 2012 at 1:36pm |
|
I suggest either buying the cells which those batteries are made from 18650 lithium ions (look a bit like AA's). Or look at RC hobby battery packs. Just because the proprietary sonny connectors will be a ball ache to work with.
fwiw, you can also buy replacement laptop batteries from ebay, those are also made up of a bunch of 18650 cells. The dangerous bit with any lithium ion battery is charging and protecting the battery packs. You have to be very careful with them. |
|
|
|
|
alphabetikal
Registered User
Joined: 20 May 2010 Location: UK Status: Offline Points: 217 |
Post Options
Thanks(0)
Quote Reply
Posted: 12 June 2012 at 3:21pm |
what things can you not do with them apart from the obvious? a
|
|
|
|
|
Briefcaseboombox
Registered User
Joined: 04 June 2012 Status: Offline Points: 17 |
Post Options
Thanks(0)
Quote Reply
Posted: 12 June 2012 at 5:52pm |
|
I'm not really an expert, but the RC hobby guys are. There are several videos of fires caused by RC lipos. I suggest RCgroups as a good forum, full of battery information. The benefit of using hobby lipos is they can cope with very high discharge rates and often are pretty cheap
They like to explode if you puncture them, charge them at too high a current, charge them at the wrong voltage. Most of the mistakes happen because people are charging different battery packs, so set the charger up incorrectly. Remember you keep a lithium ion battery in your mobile phone next to your balls and you don't hear about them exploding regularly, that's because the phone takes care of charging and monitoring the battery. But it does freak out if you fit an unauthorised battery (to prevent the chance of fire/destruction) |
|
|
|
|
alphabetikal
Registered User
Joined: 20 May 2010 Location: UK Status: Offline Points: 217 |
Post Options
Thanks(0)
Quote Reply
Posted: 13 June 2012 at 5:42pm |
|
good points - thanks for that info - esp. ball fire alert. V.important. :D 10ah 12v looks nifty! |
|
|
|
|
RAGING PROMOTIONS
Registered User
Joined: 24 February 2008 Location: London Status: Offline Points: 443 |
Post Options
Thanks(0)
Quote Reply
Posted: 14 June 2012 at 12:37am |
|
lithium ion (li-ion) and lithium polymer (li-po) are different! lithium ions are used in consumer gear, laptops etc. lithium ion are less dangerous than li-po. lifepo4 are much safer than both and you can buy them in standard SLA sizes which can be charged from a normal lead acid charger.
all batteries are dangerous, its how you treat them that matters
Edited by RAGING PROMOTIONS - 14 June 2012 at 12:38am |
|
|
8X Turbosound TSW-721's and 4X TFL-760Ht's
|
|
|
|
|
slaz
Old Croc
Joined: 27 November 2009 Location: London E2 Status: Offline Points: 2713 |
Post Options
Thanks(0)
Quote Reply
Posted: 14 June 2012 at 8:51am |
That should do fine for 1 or 2 Tripath 2020-based amolifiers .... wouldn't try to power a 12V->step-up board with it though. Educated guess says the 2A current limitation is down to the o/p regs etc. rather than the cells themselves ..... I'd also assume the real-world capacity is optimistic ..... prob no more than a 7Ah SLA. Still quite good though if weight-saving is what you're after. |
|
|
REMEMBER....POLITICIANS AND DIAPERS SHOULD BE CHANGED OFTEN AND FOR THE SAME REASON
|
|
|
|
|
Post Reply
|
|
| Tweet |
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Topic Options
alphabetikal wrote: