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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.

I meant while it's moving

I know it is theoretically possible but has anyone actually hooked up a pv system to an electric vehicle?

Kind of. We have 4 hours of full sun yesterday. Thats 4 hours this year.

We get a lot of sun over here. Maybe a couple of hour a month :( I'm trying to avoid using a charger and would rather rely on the performance of the kit/conditions to dictate. As I appreciate, it's not going very well.

Well my cheapass controller shuts the load off at 11.1v. I can use the inverter direct from the battery and drop it more but I'll still testing the rather poor limits of the controller. As my load is less than 10A I am deliberatley using the controller load out. for now.

Noted and tested as such.

Well, as we managed to get about 4 hours uninterrupted sunshine last week it seems to have become a bit clearer. While the controller does seem to be a 'bit off' from it's noted params is does roughly what it's supposed to when there's enough sunlight.

Sorry for the late response. Yes, there are 'some things' to take away from your replies that, as a noob, I'm not aware of. I have my eye on modular expansion rather than a turnkey system so a grasp of the fundamentals is in my own interest. Regards, all.

Taken from the Renogy website: https://uk.renogy.com/renogy-rover-20-amp-mppt-solar-charge-controller/ 6.How many watts can Renogy Rover 30 amp charge controller handle? The Rover MPPT charge controller can work with standard off-grid 12/24V solar panels with high voltage or multiple panels...

I appreciate this is a poverty level/noob kit but I would expect the controller to continue to attempt to charge the battery. Am I mistaken in this assumption.

I have this kit: https://uk.eco-worthy.com/products/25w-12v-monocrystalline-solar-panel-trickle-charger-kit?variant=40700172304533 It is connected to this battery...

QDog, in your image I have breakers between the panels and the controller and the battery and the controller. Other than that, my setup is as shown. My original question was; do I put the charge controller 'under stress' (or using Rocketmans' parlance, a 'loop') by having an active load on the...

As the appliance is only drawing 6A I've successfully used the inverter through the charge controller load output. So it will charge from a panel while discharging the battery.

1. Someone on the forum 2. No. there is no reference to connecting anything other than 'a 10A load'. 3. Putting a lightbulb on it isn't specific enough an instruction. What I can say is when I connect all the breakers, i.e., allow the charge controller 'access to the battery' I get a fast...

This is the kit: https://uk.eco-worthy.com/products/25w-12v-monocrystalline-solar-panel-trickle-charger-kit?variant=40700172304533&utm_medium=cpc&utm_source=facebook&utm_campaign=Facebook+Shopping&fbclid=IwAR382vzj7PlIVNt9qG71UwRBX7TLWJLu8mh_lRH2aMVxyAz00WY9fXBPbno It's set up as intended. The...

I have the most basic 12v/10a kit from ecopower/solar or whatever they are called. I have a 600W inverter connected directly to my battery (through a shunt). This will charge my ebike battery which, while not the kits intended purpose, is one of mine. I was advised to totally isolate the charge...

Question: how do you determine when a LiFePo battery is in need of a recharge? If you look at the following Pb acid .V. lifepo DoD graph: https://www.thepilotgroup.co.uk/lithium-ion-battery-vs-lead-acid-battery/ it's reasonably easy to infer when the lead batt could do with a recharge. Do...

Thanks. I'm visualising the scenario where the controller is augmenting power delivery from the battery to the inverter and not the inverter 'pulling the controller down' to a point where it might shut down the controller completely. BTW, the controller can be disconnected from all three...

Actually, that doesn't quite answer my question. I mean do I need to disconnect the battery charger function of the controller from the battery when the inverter is delivering power?

roger.