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Chris C
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Battery

I have a 420R & the current (no pun intended!) Banner battery seems to be getting tired & needs lots of trickle charging if the car isn't used for more than a week.

Can the POBC suggest a more powerful battery I can install?

Thanks

Chris

Jonathan Kay
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EDITED: see below.

Private Message sent.

rj
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Jonathan,

You're missing an "s" in "message"

 

 

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Jonathan Kay
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Thanks.

Now corrected.

Jonathan

Golf Juliet Tango
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A new Banner is ok.

But Odessy gel type battery is good too, particularly if you have deeper pockets and wish to reduce the weight of the car a little.

I wouldn't consider Lithium Ion as an installation but they are very popular as emergency jump starters.

Stephen

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SM25T
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Do you isolate the battery if the car is left standing ? The immobiliser will drain the battery to levels too low for starting and powering the ECU within 2-3 weeks.
rj
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How much are you prepared to spend?

Red Top batteries are better than the Banner, but the ultimate would be a proper Lithium battery. You just need to be aware that the marking often is the equivalent CCA capacity battery rather than the actual capacity of the Lithium battery.

This has almost the same capacity as the Banner, but a lot more cranking juice. (Unfortunately in Denmark, but that's a detail to overcome)


 

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Piers300
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What sort of battery charger are you using. There are "Battery Chargers" and there are "Battery Chargers" .

They do different things. Some have control, some don't. Some battery types require a special chargers.

1) Constant Potential Type - i.e. fully automatic and can be connected all year. Good for lead acid. Maintains the battery by monitoring the voltage and automatically increases and decreases current. When the voltages are equal - no current flows so it is on but not charging. If the internal battery voltage changes, the charger automatically starts charging again. There are a number of excellent products you can buy for this type of charger.

2) Standard Trickle/Boost Chargers. These should only be used short term (and monitored often) as they will keep on charging till it boils your battery. Don't use these on the 7 long term, unless the battery is flat as a pancake. Once fully charged, disconnect.

I've been out of the Battery Charger industry for a few years now and things have changed. Plenty of good kit out there. I've got a Banner AccuGuard 1800 and it's been on the same battery for the last 10 years. No issues at all.

 

Piers

Geoff Brown
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Does not matter how careful you are with the maintenance of a Banner from my experience they can die as quickly as three years. Unless very lucky.

2013 car now on my third !  First lasted three years, second four years 

I have a CTEK charger/conditioner/analyser & even with that they fail. If you do not intend to drive the car for more than a week then disconnect the battery.

gileshudson
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Even though battery conditioners are better than constant battery chargers, I've still killed batteries on them.
I've now bought a cheap £5 B&Q timer switch which I plug my Optimate 4 battery conditioner into, set so that it only gets power to check and maintain the battery for one hour a day, not 24.

 

Giles Hudson
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That's exactly what I do for my Li-on mine gets 4 hours on a Thursday !

A simple daisy wheel timer for my Noco Genius charger