A simple little protection board for low current (3A or less draw) systems using 2 series lithium cells. The type / size of cell is not important but the chemistry, must be lithium. The Negative ( -) end of the first cell is connected to the PCB terminal marked B- The connections between the (+) positive end of the first cell and the (-) Negative end of the second cell is connected to the PCB terminal marked BM (battery middle?) The (+) Positive end of the second cell is connected to the PCB terminal marked B+ The connection to the load / charge is made to the terminals marked P+ (7.5V nominal) and P- (GND Negative) Operation is simple. If either of the 2 series cells exceeds the upper voltage limit or drops below the lower voltage limit, the load / charge connection disconnects. The load / charge connection reconnects when the voltages are normal again. This may be the basis of a simple charge limiting circuit and over discharge protection circuit. The board is well made and works as it should. I hope this clears up some of the questions raised.

A simple little protection board for low current (3A or less draw) systems using 2 series lithium cells. The type / size of cell is not important but the chemistry, must be lithium. The Negative ( -) end of the first cell is connected to the PCB terminal marked B- The connections between the (+) positive end of the first cell and the (-) Negative end of the second cell is connected to the PCB terminal marked BM (battery middle?) The (+) Positive end of the second cell is connected to the PCB terminal marked B+ The connection to the load / charge is made to the terminals marked P+ (7.5V nominal) and P- (GND Negative) Operation is simple. If either of the 2 series cells exceeds the upper voltage limit or drops below the lower voltage limit, the load / charge connection disconnects. The load / charge connection reconnects when the voltages are normal again. This may be the basis of a simple charge limiting circuit and over discharge protection circuit. The board is well made and works as it should. I hope this clears up some of the questions raised.

A simple little protection board for low current (3A or less draw) systems using 2 series lithium cells. The type / size of cell is not important but the chemistry, must be lithium. The Negative ( -) end of the first cell is connected to the PCB terminal marked B- The connections between the (+) positive end of the first cell and the (-) Negative end of the second cell is connected to the PCB terminal marked BM (battery middle?) The (+) Positive end of the second cell is connected to the PCB terminal marked B+ The connection to the load / charge is made to the terminals marked P+ (7.5V nominal) and P- (GND Negative) Operation is simple. If either of the 2 series cells exceeds the upper voltage limit or drops below the lower voltage limit, the load / charge connection disconnects. The load / charge connection reconnects when the voltages are normal again. This may be the basis of a simple charge limiting circuit and over discharge protection circuit. The board is well made and works as it should. I hope this clears up some of the questions raised.

Nabíjací a ochranný obvod pre 2ks spojené Li ion batérie 18650 2S 7,4 V. Balenie po 5 ks.

Nabíjací a ochranný obvod pre 2ks spojené Li ion batérie 18650 2S 7,4 V. Balenie po 5 ks.

Nabíjací a ochranný obvod pre 2ks spojené Li ion batérie 18650 2S 7,4 V. Balenie po 5 ks.

Arrivé rapidement

Gyorsan megérkezett

Arrivé rapidement

très bien recommande 🤝🏿

muito bom recomendo 🤝🏿

très bien recommande 🤝🏿

acheté pour protéger les batteries externes eux ion pour le module externe r9m. Les coussinets à souder sont délicats. À 385° ils se détachent et se déplacent.

comprato per proteggere le batterie esterne li ion per il modulo esterno r9m. i pad da saldare sono delicati. A 385° si staccano e si spostano.

acheté pour protéger les batteries externes eux ion pour le module externe r9m. Les coussinets à souder sont délicats. À 385° ils se détachent et se déplacent.

Livraison rapide. Fonctionne bien

Fast delivery. Works fine

Livraison rapide. Fonctionne bien

good quality, it's working, very small dimensions

good quality, it's working, very small dimensions

good quality, it's working, very small dimensions

est arrivé très vite encore je ne l'essaye pas mais il semble bien quand je l'essaye je vais commenter plus

llegó muy rápido aún no lo pruebo pero se ve bien cundo lo pruebe comentaré más

est arrivé très vite encore je ne l'essaye pas mais il semble bien quand je l'essaye je vais commenter plus

nice and small

nice and small

nice and small

O K Très bien.

O K Πολύ καλό.

O K Très bien.