paul2 Posted November 1, 2018 Share Posted November 1, 2018 Hi I have just purchased an ebike with a Bosch active line plus motor and a Bosch power pack 500. The charger has an Input of 100-240v 50/60hz 1.6a and an Output of 36v 2a. So my question is when i'm in the van and no EHU is available what type and size Inverter do I need to charge the ebike battery ? (I have never used an Inverter before) All advice and recommendations welcome. Thankyou Paul Link to comment Share on other sites More sharing options...
spirou Posted November 2, 2018 Share Posted November 2, 2018 600W (constant, not peak power) will be more than adequate and capable of powering more than just the bike charger if necessary. 240V x 1.6A =~400W with conversion losses + a bit extra margin. Just be mindful that it won't be the healthiest thing on your leisure battery as it is quite a load at 12V. A better option would probably be to wire the inverter to the engine battery and charge the bike while driving. Link to comment Share on other sites More sharing options...
colin Posted November 2, 2018 Share Posted November 2, 2018 The 1.6amp input is at 110v and doesn't account for power factor. Link to comment Share on other sites More sharing options...
colin Posted November 2, 2018 Share Posted November 2, 2018 Been trying to find the thread where I posted a photo of meter showing the actual power used by a ebike charger, can't find it, but IIRC they only draw about 80w from mains. Link to comment Share on other sites More sharing options...
hallii Posted November 2, 2018 Share Posted November 2, 2018 I charge my two bike batteries at the same time from my 600w pure sine wave inverter. This is without mains connection, no engine running, just the solar panels (2x 80w) and 2 x 110 ah gel batteries. In sunny France or Spain there is enough spare solar power to provide a small charge to the leisure batteries. All this assumes that the bike batteries are not fully discharged, they take a bit more current then, but usually my batteries are around half to two thirds discharged. Note the pure sine wave inverter, they are a bit more efficient and don't blow up delicate electronics like the "modified square wave" inverters are prone to. They cost a small amount more but are worth it. H Link to comment Share on other sites More sharing options...
sshortcircuit Posted November 2, 2018 Share Posted November 2, 2018 Have used a 150w modified sine inverter for a few years now. The charger is only about 50w and takes its time on the bike battery, but I am in no big hurry. If you have concerns about depleting your leisure battery you could charge when on the move. Link to comment Share on other sites More sharing options...
aandncaravan Posted November 2, 2018 Share Posted November 2, 2018 So to summarise all the above, a Pure Sine wave inverter of about 200w peak, or 100w continuous should draw about 8 amps. That current draw should be fairly easy to put back,into the batteries by either driving or Solar. You could use a modified Sine Wave Inverter, but they are generally lower quality, less efficient and can damage some sensitive electronics. Note that just like Lead Acid batteries, if you discharge an eBike's Lithiums too Deeply it can shorten the battery life. The growing consensus seems to be that for the best compromise between life and usability, try not to discharge them below 60% - 70% Depth Of Discharge (DOD) and recharge them as soon as you can. Don't store them in a discharged state, always fully charge first. . Link to comment Share on other sites More sharing options...
paul2 Posted November 3, 2018 Author Share Posted November 3, 2018 Thankyou all for your replies you have been a great help Paul Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.