Hmm, on the fence about that one Tony. I have both a Shumaker and a Battery Tender and both are trickle chargers and they are both "smart". I've brought back many a totally dead battery with them. 10amps can quickly overheat a motorcycle battery. I set my larger Shumaker to 10amps when I need to start a bike with a dead battery.
06 Paul Smart Sport Classic NFS ever.
08 S4RS Tricolore #081 NFS ever.
01 M600, aka, The Pink Monster
97 900SS CR
72 Norton Commando 750
03 KX60 with S4R rear shock,Honda CB350F, Hodaka Ace90, 3x Yam-YGS1, Yam-CS3 200, Vespa small frame, Gilera 106, Puch Sabre, Puch 50 Boy Racer, Ducati 250 bevel, Benelli 250, Benelli 360, Honda CB350T, and many more.