Left OP - current limiter
Right OP - full charge cut-off
Precise voltage dependent - if not sure use with 7805 at input at least
Battery starting from 2.8V, use switch...
v1.1- 10k resistor on the left is NTC thečmistor which serves as thermal fuse - should be placed near battery. If you use one with at least 2700K constant device will reduce current flow when temp. Raises, for example at room temp itll be 1A but when it reaches about 50°C itll drop to 500mA etc...
