dpb

Taken Sony ray charger with it's integral 1/4 amp fuse from car and put it in boat 12v cigar lighter iv installed . It's on its own circuit 10A circuit breaker , same rating as car ( what it says on the removable cap anyway)

In the boat fuse ( quick blow) goes straight away

There's nothing charging battery


Iv put a 2 amp quick blow and it's fine.

Should I put a slow blow 1/4 amp in there , am I going to damage phone ?

Turbohot

Well, you never know until you try it. If you find that it has damaged your phone, it would mean that your chosen amp wasn't right for it.

Good luck.

dpb

Hasn't blown it up yet, guess must be okay

Turbohot

See, I told ya. You can't dread every little action of yours with the thought- "Oooh, I can't do this because it may end into a disaster." People wouldn't have built houses brick by brick, thinking it may fall on them one day. You have to take risks in life sometimes. If your current cheapo phone/charger blows up, no big loss. Just go out and buy yourself a brand new bling iPhone5 to keep up with these modern times.