stripedtuna
100 W
Hi everyone,
I wired up my bike lights last night, as daylight saving finished and the commute is getting pretty dark after work. I used the Auxillary power output lead from the cycle analyst, then a step down dc - dc, then the 8.4V steady output to the bike light. The light only has power when the CA is on. Perfect. It works really well except that when the light is on, the CA shows how many watts it uses but as a negative figure. So for example with the bike stationary, with no light on, the CA shows 0 watts, but turn the light on, and it shows -20 watts. (minus 20). The problem is that it also then affects the Ah reading which tells me how much power battery I have used. In fact it winds backwards.
Is this normal? Anyone else use that CA aux power output? I would have expected it to show positive power usage, and then add to the amp hours used, thus giving me a more accurate measure of how much battery i have used since the last charge.
Cheers,
Ed.
I wired up my bike lights last night, as daylight saving finished and the commute is getting pretty dark after work. I used the Auxillary power output lead from the cycle analyst, then a step down dc - dc, then the 8.4V steady output to the bike light. The light only has power when the CA is on. Perfect. It works really well except that when the light is on, the CA shows how many watts it uses but as a negative figure. So for example with the bike stationary, with no light on, the CA shows 0 watts, but turn the light on, and it shows -20 watts. (minus 20). The problem is that it also then affects the Ah reading which tells me how much power battery I have used. In fact it winds backwards.
Is this normal? Anyone else use that CA aux power output? I would have expected it to show positive power usage, and then add to the amp hours used, thus giving me a more accurate measure of how much battery i have used since the last charge.
Cheers,
Ed.