I dont have the Keyborad but my wife and I both have Logitech ?mice? ROFL sorry that just sounds funny. Anyway, they eat through batteries so fast I should take out stock in Energizer, seriously, no I mean really take out stock, big tip here yall. I have in the past found rechargeable device to be completely unreliable as in the batteries in them or the internal recharging unit ,whatever it uses, loses a charge faster than the cheapest battery. Also have they worked through the battery memory issue on rechargeables? Just curious...