Lithium metal batteries

[AlastairCooke]

Hi All,
Just received a package from Kian and Monique :

I read with interest the recommendation to avoid using Lithium metal batteries. I have just re-read Stephen White's detailed thread leading to the selection of LiFePO4 batteries for his Cent and the lack of any problems with regenerative current loading. Does anyone have any experience of using these batteries with the 2019 electronics?

Alastair

[Christoffer Ahlfors]

In lack of knowledgeable answers.. I see only two ways here. If the 2019 electronics absorbs such reverse energy, there is no effect on the batteries. If it passes it on to the batteries, there is no difference to the 2010 electronics.

In terms of batteries, again I see two ways: A battery with built in battery monitoring system (BMS), that monitors it for over- and undervoltage, and simple cells without BMS. A BMS being fed energy from the load side, may not be designed for that and could shut off unexpectedly or even sustain damage. If there is no BMS (you could easily build a voltage monitor yourself), the energy could easily be absorbed by the battery itself. Brief moments of over- or undervoltage (within limits, probably...) is no problem.