One big thick d-lock with a cable or...

[Mal69]

One of those locks is over 14 pounds! That's half the weight of my entire electric bike. How can you carry a 14 pound lock?

Its heavy, 2.7KG but it fits in the pannier rack bag and the chain add on for the wheels has an attachment you put on the seat post and is lightweight.

 

[topographer]

Thanks for the various responses. I'll cogitate on them. I definitely like anotherkiwi's frame lock as a permanent base level security. And Nealh's good bike/crap bike twosome is something to think about long term; maybe I should convert my late nineties cheap lump of cromolly. I need to find out how Kryptonite works and if they really do pay out for stolen broken locks or if they're t***s like insurance companies. Good idea in theory though.

Also...just realised that the lights I've put on my bike are easily nickable because they just strap on with stretchy rubber bands.

 

[anotherkiwi]

b+m front light, quality beam, slides off and goes in pocket when not in use (can be used as a high powered torch).

Rear light which slides in and out of permanently mounted holder.

Yes these lights cost more but they also offer more value for money in my experience - 2+ years and still going strong.