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.

وصل بسرعة

Gyorsan megérkezett

وصل بسرعة

يوصي جيدة جدا 🤝🏿

muito bom recomendo 🤝🏿

يوصي جيدة جدا 🤝🏿

تم شراؤها لحماية البطاريات الخارجية أيون الوحدة الخارجية r9m. الوسادات التي سيتم لحامها حساسة. عند 385 درجة ينفصلون ويتحركون.

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.

تم شراؤها لحماية البطاريات الخارجية أيون الوحدة الخارجية r9m. الوسادات التي سيتم لحامها حساسة. عند 385 درجة ينفصلون ويتحركون.

تسليم سريع يعمل بشكل جيد

Fast delivery. Works fine

تسليم سريع يعمل بشكل جيد

good quality, it's working, very small dimensions

good quality, it's working, very small dimensions

good quality, it's working, very small dimensions

وصل سريع جدا ولكن أنا لا تحاول ذلك ولكن يبدو جيدا عندما أحاول ذلك وسوف تعليق أكثر

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

وصل سريع جدا ولكن أنا لا تحاول ذلك ولكن يبدو جيدا عندما أحاول ذلك وسوف تعليق أكثر

nice and small

nice and small

nice and small

O K جيد جدا.

O K Πολύ καλό.

O K جيد جدا.