superdiy Posted May 20, 2016 Share Posted May 20, 2016 http://www.sinetech.co.za/news-omnipower-powerbank-affordable-lithium-ion-battery-energy-storage.shtml The PowerBank is a high power and compact 48 V, 6.5 kWh energy storage solution capable of being discharged to 80% for approximately 5000 discharge cycles. The PowerBank can easily handle 6.5kW continuous power draw as well as a 10kW in rush capability whereas the “other” very well-marketed Li battery (at the time of article release: 6 May 2016) can only deliver 3.3kW of power. The Omnipower Lithium-Ion storage system is extremely cost effective even when compared to high-cycle lead-acid batteries; this is mainly due to The PowerBank’s longevity and high cycle life. In order to compare the costs of The PowerBank with that of lead-acid we compare the Rand per kilowatt hour (R/kWh) each technology can deliver, calculated by taking the cost and total kWh over the batteries’ life time into account. The life cycle cost of The PowerBank (±5000 cycles) is approximately R 1.85 / kWh compared to that of a high cycle lead-acid battery (±1500 cycles), which is approximately R 3.65 / kWh. From this it can be seen that The PowerBank comes in at almost half the life-cycle cost when compared to lead acid batteries. Quote Link to comment Share on other sites More sharing options...
Guest Posted May 20, 2016 Share Posted May 20, 2016 Ja, but the pic shows it does not work with Infini's only Victron. Quote Link to comment Share on other sites More sharing options...
___ Posted May 20, 2016 Share Posted May 20, 2016 1 hour ago, superdiy said: From this it can be seen that The PowerBank comes in at almost half the life-cycle cost when compared to lead acid batteries. That's a rather horrible generalisation. You can't conclude, from comparing with HIGH CYCLE batteries that the cost is half that of (all) lead acids. You have to compare with a proper lead acid, and the cost is much closer to R2.50 per kwh for a decent deep cycle lead acid (such as the Trojan series of batteries). I mean, the PowerBank still wins... but lets be fair shall we :-) In addition, I am certain I've seen high end (expensive!) PzS lead acids break the R2 barrier... of course you're going to need a lot more lead dunked in acid buckets for that... but still, let's be fair :-) Quote Link to comment Share on other sites More sharing options...
___ Posted May 20, 2016 Share Posted May 20, 2016 So working backwards, if discharged down to 80%, times 6.5kwh, times 5000 cycles... 0.8*6.5*5000 = 26000kwh over lifetime at R1.85 each, that means it costs just shy of 50k. Probably ex vat too... :-) ibiza 1 Quote Link to comment Share on other sites More sharing options...
superdiy Posted May 23, 2016 Author Share Posted May 23, 2016 On 5/20/2016 at 4:34 PM, The Terrible Triplett said: Ja, but the pic shows it does not work with Infini's only Victron. A comment like that was expected. Chris Hobson 1 Quote Link to comment Share on other sites More sharing options...
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