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Design
This design requires the battery can supply a higher current. For this design we will be using 2 100Ah LiFePO4 batteries.
Fuse Panel (12 Circuit)
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Components
Solar Charge Controller
Model: ALLPOWERS 20A Solar Charge Controller Solar Panel Battery Intelligent Regulator-Blue
The solar charge controller is responsible for charging the battery from the solar cells.
Q: What battery type is this controller supported?
A: (1)B-01=LEAD-ACID, 12V; B-02=LITHIUM ION 3s, 3*3.7V=11.1V; B03=LIFePO4 4s, 4*3.2V=12.8V. (B01 is the default type, If you would like to to switch to another 2 types, please select it manually.)
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See Renogy Rover 30A MPPT Charge Controller
We will be using the b03 setting for LiFePO4 4S.
Solar Panel
We have a flexible 100 watt solar panel from AllPower.
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Specification | Value |
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Capacity | 100 Ah |
Nominal Voltage (4 x 3.2v) | 12.8v |
Max Voltage (4 x 3.6v) | 14.4v |
Min Voltage (4 x 2.5v) | 10v |
Cell Configuration | 4S |
Max Current Output | 100A |
Battery Charger
WAOUKS 14.6V 20A Charger 4 Series 12V LiFepo4 Battery Charger Smart Charger Aluminum Case with Cooling Fan for 4S 12V 12.8V LiFepo4 Battery Pack.
Specifications:
Product Name: 14.6V 20A Charger
Model: WA360-14620B
Dimensions: 180x90x63mm
Product Weight: 1.4 kg
Color/Material: Black/Aluminum Case
Suitable for Battery type: 4S 12V 12.8V 14.4V LiFepo4 Battery Pack
AC Input: 100~120Vac, 50/60Hz
Output Voltage: 14.6 Volt
Output Current: 20 Amp
Battery Protection: SCP,OVP,OCP,OTP
Charging Mode: Constant current - Constant Voltage - Trickle: Three-stage intelligent charging
Charging efficiency: ≥90%
Working temperature: -5 ℃ ~ +40 ℃
Storage temperature: -40 ℃ ~ +70 ℃
AC power cord, DC connector can be customized.
Operating Instruction
1. Before charging, please connect the DC terminal to battery first, and then connect the AC terminal.
2. After charging complete, unplug the AC terminal firstly, and then unplug the DC terminal.
3. No charging or after charging complete, be sure to unplug the DC terminal and AC terminal.
LED Indicator:
LED 1 red: Power on.
LED 2 red: Battery being charged.
LED 2 Flash: Battery will be charged completely soon.
LED 2 green: Battery has been charged completely.
DC-DC Converter
The DC-DC Step down converter will be used to charge the battery while driving. The output will be set to a maximum of 14.4v.
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Capacity Meter (No Longer Used)
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