Cheap eBay battery tenders

[Nope.]

Hi all,

With my growing vehicular collection, more and more I'm finding dead batteries because the cars/bikes don't get driven/ridden enough.

I've got a couple of Optimates which do a good job for the vehicles they're on, but they're quite expensive when you need 8 of them!

I've been thinking about getting one of these to try out:

https://www.ebay.co.uk/itm/222667723252

But I'm a little concerned it'll just catch fire or damage the battery. Does anybody have any person experience?

Thanks!
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Former: Derbi GP1 50, Sachs XTC 125, Suzuki GSXR 400 GK73A, Kawasaki ZX7R, Suzuki DR250, Yamaha RD350
Current: 2011 Yamaha XT660Z Ténéré, 2003 Yamaha YZR-R1 5PW (In Build), 2009 Kawasaki ZZR1400

[MattEMulsion]

Rotate the Optimates, in my experience they don't need to be left on one battery 24/7.
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Yamaha YZF-R6

[Beehive Bedlam]

Get rid of 6 of the vehicles.

[MarJay]

Guy on a FB group I go on bought one of these weirdoes, and wired it up to an optimate and all of his bikes.

https://www.ebay.co.uk/itm/5v-9v-12v-24v-DC-4-channel-multifunction-delay-relay-LED-CLOCK-time-timer-Switch/181971316767?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649

He set it to 3hr cycle intervals (switches to the next relay after 3hrs)
and bob's your uncle.
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[Bonnie Lad]

I got a 'biketek' one off Amazon for 17 quid and has done the business for a few years now

[Ed Case]

As MattEMulsion says, it's not necessary to leave the Optimate on one battery all the time. I've got three bikes and every couple of weeks give them all individually a 24 hour session.................works for me.

[Nope.]

[johnsmith222]

Coming from having 5 vehicles at once (4 bikes and a car), going down to 1 bike and 1 car was a great choice.

Might be worth considering if you find you're not using them/some are stored a distance away.

[temeluchus]

If its not a huge arse ache, charge the batteries, remove them and put there somewhere out of the cold?
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Some shite cruiser. Now with guns and FREEDOM!

[Copycat73]

from HK, Hong Kong .. nope.
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Whatever I post I have no citation and no intention of providing one..
caveat emptor

[bugeye_bob]

The Lidl ones are just the job at £14 a pop,
Made for the job, 3 Yr warranty, just make up a small loom(with fuse) for all vehicles with a socket, and add a plug to the charger, so you can quick swap between vehicles,
I can maintain 2 bikes with 1, I made up a small extension with the same plug/socket ends on,

plug & sockets,

https://www.ebay.co.uk/itm/10-Set-2-Pin-Automotive-Plug-Pair-for-Motorbike-Cars-Flame-Retardant-CK/192338376782?epid=930662581&hash=item2cc842b84e:g:qDsAAOSwY~1Z6Hsr

cable,

https://www.ebay.co.uk/itm/2-CORE-RED-AND-BLACK-12V-12-VOLT-CABLE-AMP-CAR-AUTO-BOAT-AUDIO-SPEAKER-WIRE-UK/202215539430?hash=item2f14fc42e6:m:mspwaVa1IsBwRWeG3h_yWqQ

Fuse holder,

https://www.ebay.co.uk/itm/Waterproof-Automotive-30A-12V-24V-Inline-ATC-Standard-Blade-Fuse-Holder-12-AWG/270924230575?epid=1788316970&hash=item3f1457afaf:g:U~oAAOSw6n5Xvw9n