It seems like 2 serially connected LiPo cells inside. Fully char...ged voltage is near 8.4V. Internal charger seems good quality, uses proper CC/CV charging. CC charging current is 0.5A, terminated slightly below 8.4V, at least for my sample, that is good. The battery has over discharge protection. Measured capacity is slightly below 400mAh (200mA load current from fully charged to point of over discharge protection disconnects load)
Verified purchase: Yes | Condition: New
More current output than a norma...l 9v battery. Charging is easy and has 3 leds to indicate state of charge. Very handy for use with Arduino projects. I measured the output voltage as 9.22 volts. If a battery is low or zero, just charge it on the base micro usb connector.
Verified purchase: Yes | Condition: New
Very good and matching cell for my project. I also found it useful in fire detectors, mustimeters.. etc. I would recommend it.
Verified purchase: No
Gives full 9v output, ideal for meters and instr...uments.
Verified purchase: Yes | Condition: New
Very Pleased
Verified purchase: Yes | Condition: New