Charging a 12v Sealed Lead Acid with a Cheap Solar Panel

[TheTacoSniper]

Hi, I have very limited knowledge in the field of general electronics. I want to build a solar boat with a pool net attached. I plan on just getting a 5Ah 12v Sealed Lead Acid from amazon (because Lipos are a pain in the ass)  and one of those cheap 12v 5watt solar panels to charge it while not in use. Would I need some sort of charge controller or is that sort of thing not necessary? Thanks and byebye!

 

http://www.ebay.com/itm/12V-5W-Portable-Solar-Panel-Power-Battery-Charger-Backup-for-Car-Boat-Automobile-/201450281105?hash=item2ee75f5891:g:50oAAOSwXeJXc25C

 

 

https://www.amazon.com/ExpertPower-EXP1250-Alarm-Battery-Terminals/dp/B0010Z4MDK/ref=cm_cd_al_qh_dp_i

 

[Space Reptile]

you need one of these things , a solar charge controller , easy to fing on ebay and cheap low wattage ones are plenty to come by 

hooking up the solarpanel will charge the battery , but also discharge it at night when the panel is not putting our current 

also just using a panel might run the risk of overcharging the battery 

 

edit , just saw that the panel is for a car or something like that and only 5w , it shud have a diode to protect the battery from getting drained overnight so it shud be JUST FINE