Advice needed - simple rechargeable circuit with port, light up switch + LED.

[Silver Serpent]

NiMH can be recharged in-hilt using the battery holder. Be advised that if the holder doesn't hold the batteries firmly and make good connection, you may have difficulty charging the batteries. It is safer to remove them first, but not mandatory.

[adamhebbard]

So would a DIY way of securing them to be to tape them into the holder perhaps? With insulating tape obviously. Thanks

[Silver Serpent]

A velcro strap is a good solution. Some holders will hold batteries tighter than others, and they get looser over time.

[Jay-gon Jinn]

Thanks! I only have one question now. With regards to batteries, can I use 4 x rechargeable AA batteries in this circuit, held in the mountable holder with jst connections, and charge the whole thing without it being taken apart?

Just an FYI, a buckpuck requires a minimum of 5 volts to operate, and the nominal voltage of 4 nimh cells is 4.8.