Q: Should 24 volts are needed, does the charge controller supplied with 40 TL stripe allow to wire two Li-ion batteries in series?
A: Yes, TL 40 stripe solar panels are provided of charge controller suitable to handle a voltage of 24 volts. However they are not designed to work with Li-Ion batteries because still is a not common standard in the market. For this reason Tregoo Lithium Power Packs are equipped with integrated charging regulator.
