I am using a 8.4V lipo battery (https://www.pololu.com/product/2226) to power my project, meaning that I have put a step-down regulator (https://www.pololu.com/product/3782) between the battery and the Photon. My plan though is to charge the battery using a 3.5W solar panel. Despite spending most of my day researching how to do that, I haven’t really found a solution. My problem is two fold:
is there a battery charger breakout that support 8.4V battery? If not, can I charge the battery through something like the Sparkfun Battery Babysitter (https://www.sparkfun.com/products/13777)?
Can I monitor a 8.4V battery using a 5V lipo fuel gauge, such as the one in the Sparkfun Battery Babysitter above or the Sparkfun fuel gauge (https://www.sparkfun.com/products/10617)?
My apologies for the newbie question, but for some reason, my google kung-fu isn’t allowing me to find the answers myself.
Thanks a lot in advance,