Solar battery trickle charger?

[FisHard]

Hi guys,
Some help please :) I'm looking for a solar powered trickle charger for my boat whilst it isn't being used. Anyone used one they can reccomend, and where do you get them?
Thank you :D

[Yellowjack]

http://4.bp.blogspot.com/-EJsgq9ZTrT0/TpXUw7uTfLI/AAAAAAAACVs/bQnfZAiW_bc/s1600/Cool+Sun.jpg

[FisHard]

Ooo kkk ? ? ?

[Fed]

BIAS have a small one that plugs into a cigarette lighter, $35 odd.

[purnong]

I would stay away from those piddly little trickle charger things, They won't charge anything like a boat battery properly
It really depends on how much you want to spend, If it's just for trickle charging/maintaining a battery I would look at a 20 watt panel and a half decent controller at the very least
http://www.ebay.com.au/itm/160684288897?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649#ht_3043wt_1185
http://www.ebay.com.au/itm/Manson-SBC-7120-20A-Solar-Regulator-Charge-Controller-12V-LCD-Display-/140749228519?pt=AU_Solar&hash=item20c54ec9e7#ht_4947wt_1163

Although the portable folding solar chargers on Ebay at the moment are pretty cheap but I would be a bit suss on the controller and would look at getting the Manson type as above, Portable type below
http://www.ebay.com.au/itm/Solar-Panel-Folding-Kit-Caravan-Camping-Power-80w-Mono-/251055058206?pt=AU_Solar&hash=item3a740c2d1e#ht_5786wt_1139
At least with the portable 80 watt setup it will actually charge a flat battery and also maintain a good one
I have a 20w and Manson controller on my shed and it works well, I swap my various batteries over once a week to the charger and it maintains them well