Im trying to build a tiny solar charged energy source. Im a beginner at electronics so i need some help choosing batteries. Im only planning to spend a small amount of money so i figured i could use six 6v 250mah panels i found for really cheap(3s2p).So Im thinking of either building a 3s3p liion pack with the 3000mah 10c batteries i found (4$ each) or using 12v 7000mah dry akkumulator. Theres also these lifepo4 batteries with 6000mah 3c for around the same price but i cant really find any good bms for that voltage. What should i do? As i said i am a beginner with electronics and kinda know it would be inefficent to have solar in this price range but think it could be a cool thing to have.