Recent content by Roop

Ok. Well, the LifePo batt is won't be connected until I take the bike and trailer out. That charge controller is exactly the type of second purchase I'll be going for, if not a little on the small side- slightly OT but can I connect panels in 24v mode to charge a 12v battery or does it have to...

I watched this video: He suggests that trickle charging is bad but doesn't explain why. So I googled: lifepo4 trickle charge issues and got this...

I did once fall off a motorbike going backwards.

Do I need to consider vibration or shock loading for a small system in a bicycle trailer?

Actually the drag from the motor is not inconsiderable. I have to have the power setting at 1 on level ground and rarely go below 2. I wonder if there's some kind of regeneration going on but I've no way of testing it.

Mmm, a 180W panel is 1m long. Add another metre for mechanical bollockage and it might be 6 foot long.

read my last...

I stand corrected: https://eovolt.co.uk/collections/batteries-motors/products/eovolt-confort-20-bike-spare-battery FUCK THAT. So Kravitts' comment makes more sense. Oh, range 20 miles max at full power on flat ground. Basically eovolt; Range 70-100km. You're talking bollocks.

Have to disagree. A new batt, last time I looked, was 350 quid. A 180W panel and the 6 quid controller I have is less than 200. As Scottish Lenny says it might be cheaper to build my own batt pack. BUT, installing a charging system now might extend the life of the current bat if I'm not...

Well my bike was 'promoted' as using samsung cells (i presume 18650's). Ive done approx 600 miles over 2 years- it's a 2 grand shopper. I would hope for another 600 but the clock is ticking and as I previously said a replacement on a 4 year old ebike is prohibitively unnecessary...

Addendum. My battery is a 504Wh.

I dont have the luxury of a replacement battery. I get quite nervous thinking about the cost and availability of a replacement when I actually need one.

The objective would be to provide charge/discharge parity but as already discussed the technical challenge is reasonably a stiff one. On the upside, as discussed, its resaonably flat around here so full motive power would net 18mph max but 50% power is perfectly adequate (gives around 12mph) and...

Well, as it happens, over here only 250W bikes are legal and that's what I own. I'm charging it now and the charger is consuming 0.6A at 89W on 238VAC. The maths don't actually stack up and the charger output says 48V at 2.0A.

Should have googled it first Lol.