4 ms·Hmm, 150 mAh? How long does it last for in real use? Do you have to charge the keyboard often?by volemo 2y agoHmm, 150 mAh? How long does it last for in real use? Do you have to charge the keyboard often?sgraz 2y agoYep 150 mAh, it's what I had on hand. But I should have space for 300-500 mAh. I recharge the left (master peripheral) once per ~1.5 weeks. Right side only needs recharging every 2–3 weeks.volemo 2y agoI see. Thanks!