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Arsath

Member Since: 20 May 2015
Location: Sri Lanka
Posts: 133

2010 Defender 110 Puma 2.4 CSW Fuji White

TDCI 2.4 Alternator and Dual Battery Setup

Hi All,

Looking to set up a leisure battery for my Puma 2.4. Trying to determine if the Puma's alternator is a computer controlled one. In which case I will need a battery to battery charging unit or else I am intending to use a voltage sensing relay (VSR).
Is it computer controlled or not?
Any suggestions on this are highly appreciated.
Thank you.

17th Feb 2018 8:18pm

pannawonica

Member Since: 21 Nov 2010
Location: Clackline Western Australia
Posts: 568

VSR charges the second battery on my puma2.4 just fine!

This is what is largely all on here use!

18th Feb 2018 7:11am

Arsath

Member Since: 20 May 2015
Location: Sri Lanka
Posts: 133

Thank you!

18th Feb 2018 9:26am

ozzie1989

Member Since: 25 Feb 2009
Location: Wales
Posts: 282

2010 Defender 110 Puma 2.4 USW Bonatti Grey

Smart alternators are essentially those that have their output voltage controlled externally via the Engine Control Unit (ECU) rather than by an internal voltage regulator as found on traditional alternators.

Defenders have always been fitted with traditional alternators, which maintain their voltage between 13.8-14.4V depending on battery condition, load etc. and vary their output to match the number of amps being drawn.

You'll be fine with a standard setup matched to your needs.

I bet the new Defender will have a smart alternator though to comply with emissions which means we'd all need to buy expensive battery to battery chargers for dual battery set ups and then you can't use gel batteries either as they get damaged by these alternators apparently! Now: 2010 2.4 TDCi 110 Utility Wagon
Then: 2004 2.5 TD5 90 Hard Top (X-Tech Edition)

18th Feb 2018 9:49am

foggydave

Member Since: 29 Nov 2012
Location: Midlands
Posts: 263

2014 Defender 110 Puma 2.2 USW Bonatti Grey

Does the 2.2 have a smart alternator?

18th Feb 2018 5:41pm

ozzie1989

Member Since: 25 Feb 2009
Location: Wales
Posts: 282

Not that I've ever seen!

I know the latest Discovery and RR have them. Now: 2010 2.4 TDCi 110 Utility Wagon
Then: 2004 2.5 TD5 90 Hard Top (X-Tech Edition)

19th Feb 2018 9:42am

Arsath

Member Since: 20 May 2015
Location: Sri Lanka
Posts: 133

Thanks!

27th Feb 2018 1:57am

millepet

Member Since: 01 Apr 2013
Location: Wijnendale
Posts: 33

2009 Defender 110 Puma 2.4 SW Orkney Grey

&ab_channel=Trailerfitter%27sToolboxVideos
tdci's have a smart alternator: watch the video

14th Jun 2022 5:35pm

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