#3,199 in Tools & Home Improvement
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Reddit mentions of Power Analyzer - JZCreater Watt Meter Power Analyzer, High Precision RC with Digital LCD Screen for voltage (V) current (A) Power (W) Charge(Ah) and Energy (Wh) Measurement 130Amps
Sentiment score: 2
Reddit mentions: 3
We found 3 Reddit mentions of Power Analyzer - JZCreater Watt Meter Power Analyzer, High Precision RC with Digital LCD Screen for voltage (V) current (A) Power (W) Charge(Ah) and Energy (Wh) Measurement 130Amps. Here are the top ones.
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- Digital LCD Screen: Easy to read LCD screen provides clear number readings. And Real Time Reading: The Watt Meter will continuously provide real time readings of the amps, volts, and watts after connection.
- Provides 8 Electrical Readings: Current (A), Voltage (V), Watts (W), Amp-hours (Ah), Watt-hours (Wh), Peak Amps (Ap), Minimum Volts (Vm), Peak Watts (Wp).
- High Precision: Measures 0-130 Amps, Resolution 0.01 Amps. Measures 0-60 volts, Resolution 0.01 volts. 0 - 6554W, resolution 0.1W. 0 - 65Ah, resolution 0.001Ah. 0 - 6554Wh, resolution 0.1Wh.
- Multifunction Tool: Verifies sufficient operating voltage under load. Prevents peak currents damaging battery, ESC, motors, wiring and connectors. Confirms proper battery charger operation (connect between your battery and charger). Individual cell balancing. Set cutoff voltages, check battery capacity health. Detect receivers and actual operating current so as to make sure whether an UBEC is needed ect.
- 12 Months Warranty and 100% SATISFACTION GUARANTEE: If you aren't satisfied with the item for ANY reason within 30 days of purchase, we will refund the full purchase price. The product has any quality problems within one year. We will provide free maintenance or replacement after-sales service.
Features:
Specs:
| Color | 130A |
| Height | 1.8 Inches |
| Length | 3.2 Inches |
| Weight | 0.1875 pounds |
| Width | 1 Inches |
What you could do is just use a common multimeter to check voltage, time how long it takes to get your bike charged to a certain point, and then get one of those wall timers.
If it takes 4 hours to charge your battery to 100% you could set your timer to shut off the charger after 3 hours or something like that.
Right now I am running a watt meter inline between my battery and the controller.
It's pretty trashy electronics-wise as any of these really cheap things are and it's 100 amp rating is a obvious lie, but it's worked ok so far. So this way I can keep track of how much life my battery has. I expect it to die eventually, but it can be removed pretty easily.
If you want something high quality then CAv3 will do all this and much much more.
Keep in mind that occasionally you will need to charge to 100% to get the BMS to balance the cells.
I have been using this $16 boost converter successfully to boost 24VDC to 42.5V to charge my 10S battery, with this $15 watt meter to monitor the output. The adjustable voltage and current work great for me, I've charged up to 5A @42.5 volts for a bit but went down to 4A because I don't need that much current for my application as a range extender bolted to the board.
You could probably combine those with a cheap $20 power supply like this or this, or something else that can push even more wattage, make yourself an enclosure of some sort and have an adjustable DC power supply that could charge up to 600 watts anywhere from 12-80v DC.
Fun project, and depending on your needs if you don't need the watt meter, $35 with prime shipping and you could probably meet your needs.
splice in one of these between your charger and battery....stop charging when at 80% voltage
https://www.amazon.com/dp/B01LVTST80/ref=cm_sw_em_r_mt_dp_U_coFVCbD1VDC1Q