✔ 最佳答案
太陽能充電器有好多種, 你要安全合格幾乎全部都安全合格, 買一個一百幾十蚊, 好過你做DIY, 呢個係其中一種, 我都買咗。
圖片參考：
http://ebay.voosale.com/image/CMP12-7.jpg
圖片參考：
http://ebay.voosale.com/image/CMP12-1.jpg
圖片參考：
http://ebay.voosale.com/image/CMP12-4.jpg
10A Solar Panel Charge Controller Regulator 12V/24V 240W CMP SERIES Compatible with 240W solar panel, Max current is 10AFunction：According to the voltage of battery, Solar charge controller will adjust the charging current and decide the way of charging the battery. 1. Generally keep the battery on full condition.
2. Prevent the battery from over-charging.
3. Prevent the battery from over-discharging.
4. Prevent the battery from supplying power to solar panels during nights.
Output Voltage: 12V/24V Automatically distinguish voltage
Max load Current:≤12A
Full Charge Cut:13.7V/27.4V
Low Voltage Cut:10.5V/21V
Temp ompensation:-3mv/℃/cell
Zero Load Loses:≤20mA
Min Wire Size:≤20mA
Min Wire Size:2.5mm^2
Voltage Drop:<210mv
http://cgi.ebay.com.hk/Solar-Panel-Charger-Regulator-Controller-10A-12V-24V-/150494843249?pt=LH_DefaultDomain_0&hash=item230a311171
http://cgi.ebay.com.hk/Solar-Panel-Charger-Regulator-Controller-10A-12V-24V-/150494843249?pt=LH_DefaultDomain_0&hash=item230a311171
