It may be "blindingly obvious", but here's a convenient battery box mod for those times when you don't have enough batteries to hand ...<code><pre><font size=2 face='Courier'> .-------------------.------------------.---> +V = 2V5 / 4V / 6V
| | |
| .--|>|--' .--------------|---> 0V
| | | |
.-----|-----------|-----------|-----. |
| | .---^---. | | |
| | | | | | |
| _ _____ _ _____ | |
| _|_|_ | | _|_|_ | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | |_____| | | |_____| | |
| |_____| |_| |_____| |_| | |
| | |
| `---.---' `-------' | |
`---------|-------------------------' |
| |
`----------------|>|---------------' </font></pre></code>
| | |
| .--|>|--' .--------------|---> 0V
| | | |
.-----|-----------|-----------|-----. |
| | .---^---. | | |
| | | | | | |
| _ _____ _ _____ | |
| _|_|_ | | _|_|_ | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | |_____| | | |_____| | |
| |_____| |_| |_____| |_| | |
| | |
| `---.---' `-------' | |
`---------|-------------------------' |
| |
`----------------|>|---------------' </font></pre></code>