froggy8 Posted February 19, 2015 Share Posted February 19, 2015 since i got my electric bill, it seems high and just wondered if charging lipo is to blame. anyone good at maths and work this sum out please? cheers Quote Link to comment Share on other sites More sharing options...
jari Posted February 19, 2015 Share Posted February 19, 2015 since i got my electric bill, it seems high and just wondered if charging lipo is to blame. anyone good at maths and work this sum out please? cheers electricity is approximately 10 pence per kilo Watt Hour or kWh. Look at the amount of energy stored (in theory) a 2S 5000 mAh battery is notionally able to deliver 5 amp hours at the 8.4V . Let's call it 8 volts to keep the maths sane. in theory stored energy in that battery is Watts is Amps x volts 5Ah x 8 volts = 40 Wh 40 Wh is 0.04 kWh At 10 pence per kWh the cost of that energy is 0.4 pence. Very rough calculation... but I wouldn't worry about the cost of charging Lipo batteries. Worry instead about the cost of a TV that might be drawing 30W on standby... which is 720Wh every single day of the month - or 7 pence a day, 1 Quote Link to comment Share on other sites More sharing options...
froggy8 Posted February 19, 2015 Author Share Posted February 19, 2015 Hmmmm..., many thanks for that explanation Quote Link to comment Share on other sites More sharing options...
froggy8 Posted February 19, 2015 Author Share Posted February 19, 2015 at least i know its not the lipos to blame Quote Link to comment Share on other sites More sharing options...
jari Posted February 19, 2015 Share Posted February 19, 2015 Hmmmm..., many thanks for that explanation and that was my 1000th post... doing something useful. Good. and yes it won't be the lipo. If you are on electric oven then running that for an hour is a comparable cost to charging lipo's for say 5 or 10 hours. Look at what has changed in your house to track it down. Or get a watt meter that you can clamp to the utility supply and go round turning things all off then back on one at a time. you'd be surprised what are the power hogs... e.g. halogen spotlights are evil - 50W a spot typically. A kitchen with 10 of those in will be costing 5, maybe 7 pence PER HOUR. in winter that can easily be for 5 hours or more. Call it 30 pence a day.... or Quote Link to comment Share on other sites More sharing options...
turok007 Posted February 19, 2015 Share Posted February 19, 2015 (edited) i was charging lipos last summer and the bill didn't go up by much and i was using up to 7 chargers one of the worst things is the pump on a heating system. Edited February 19, 2015 by turok007 Quote Link to comment Share on other sites More sharing options...
RCbutcher Posted February 19, 2015 Share Posted February 19, 2015 Its the company mate get on the phone with your metre reading. Npower sent me a bill for Quote Link to comment Share on other sites More sharing options...
froggy8 Posted February 19, 2015 Author Share Posted February 19, 2015 Cheers guys, might just have to get the watt meter. Anyone happen to know where I can get one please?I'm also looking to change to another company too Quote Link to comment Share on other sites More sharing options...
sean-vrs Posted February 19, 2015 Share Posted February 19, 2015 Cheers guys, might just have to get the watt meter. Anyone happen to know where I can get one please?I'm also looking to change to another company too http://www.maplin.co.uk/p/13a-plug-in-energy-saving-monitor-n67fu Quote Link to comment Share on other sites More sharing options...
Rollinlow Posted February 19, 2015 Share Posted February 19, 2015 Ask for a smart Meter mate from your provider, its usually stuff like down lights panel heaters bad fridge or freezer that keeps kicking in Quote Link to comment Share on other sites More sharing options...
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