battery charger with indicator

aaa accessory adapter adaptor background batteries battery cell cells charge charger clipped close closeup conservation contacts current decline device discharge efficiency electric electrical electricity electronic electronics energizer energy environment environmental equipment flow gadgets generate gray green growth increase indicator input led near nimh object objects plus polarity positive power precaution protection recharge rechargeable recharger recharging recheargable recycling renewable spend supply sustainable sustaining tech technology tool use volt voltage watts white