They fit fine in my replica WD type boxes..I think you might struggle with a hollowed out original.....Ian
email (option): ian@wright52.plus.com
The dimensions of the battery 135mm x 100mm x 50mm, as Ian says, it fits easily into one of his battery boxes. At that price I may get a few more for the other bikes 
email (option): horror@blueyonder.co.uk
I guess with the new NiFe cases you might get two in and could have a massive 16 a.h. in reserve...
.....Ian
email (option): ian@wright52.plus.com
yes Ian, i am strugglig with a hollowed out original....too tight to pay £15+ for a repro one, however two of Maplins small dry batteries fit in. which is about 8 amp.
besides I try to avoid repro parts on my all original mongrel bike. I Would'nt want people to nit pick.
So I'm not going to get rich and retire young selling quality replica parts to you Ken...
....Ian
email (option): ian@wright52.plus.com
Nope, you'll do well to sell me much at all, I need to shift enough junk as it is.
All I get is, I hope you aren't going to die and leave me to get rid of all that stuff in the sheds.
no mention of being missed
I reconditioned an original horn and with my old 4Ah battery it made a pathetic farting sound if anything. I was going to take it apart again and shim out the diaphragm, I've just tried it on this new battery and the horn is very loud and doesn't need touching again I'm very pleased now, I can spray it and get it on the bike. People can't keep telling me I've got a post war horn on the bike then
email (option): horror@blueyonder.co.uk
All I get is, I hope you aren't going to die and leave me to get rid of all that stuff in the sheds.
no mention of being missed
Ha, you too eh? I call it our retirement fund, QFU calls it a pile of junk that she'll have to get a backhoe in after I'm gone just to clear it out!