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I have to replace the NiMH cells in my Giant LaFree ebike 24v battery pack with Lithium cells, so I have been reading the Technical and General forums to see what approaches people have taken. The prevalent approach is to either buy a battery pack of LiFePO4 cells with a BMS (e.g. Ping...

Hi, I've running a 2005 Giant LaFree Twist since 2009 (Bought 2nd hand from an American temporarily working in New Zealand). It has been ideal for Auckland's hilly terrain and inner-city commuting. However last week on a sunny day my 2005 Giant Lafree suddenly lost its Normal mode when I...

Last Sunday our public radio ran a programme about electric bikes, trains and cars. Electric bikes are the first 25% of the audio and it features Wisper's NZ manager. See this link to download the mp3: http://podcast.radionz.co.nz/ideas/ideas-20091122-1106-Ideas_electric_vehicles-048.mp3 The...

Info needed from IZip / Currie owners - SLA charger info? Hi, I have a 24V Currie charger for the 2x12V=24v SLA batteries on my electric bike. Its model number is 3A-501DA24. It has 1 green LED. When the charger is actively charging this LED flashes green; when the battery is fully charged...