? Charging Electric Bike Battery

[Dr__Feelgood]

I'm short on Electrical know how and just got E bike with Samsung 36 volt ,14,25 Ah battery. Came with 110V AC charger. Normally takes 4-5 hrs to recharge per their info. When off grid I want to charge from inverter. Would a portable 400 Watt inverter plugged into Cig Lighter in truck be OK? I hope eventually to get solar with adequate inverter for TC.Does this affect charging time?
Any good discussions on line?
Thanks

[photobug]

I'm getting a couple of these https://www.geoo.com/
this fall so I put your question to the manufacture, hopefully they'll get back to me. looks like a cool way to get around.

[MEXICOWANDERER]

Almost: The definitive CLEAN ENERGY...

Nothing lives within 50 miles and that, is mighty clean.



SOLAR. HARVEST. YADDA. PARTIAL SHADING. MPPT, YADDA...

[doublev]

Are you not going to drive your truck for extended periods of time? If so, then a generator. But if you are driving your truck daily or almost daily, then just put the inverter directly on the batteries. I'd bypass the cig lighter.. but i guess you could start with cig lighter and see if you blow the fuse first.
Seems to be the logical solution. Your daily drive will recharge the battery is no time. It would be almost like free electricity.

[Almot]

MEXICOWANDERER wrote:

A nuclear bike - that's an interesting idea. Will it come with lead-lined shorts?

[Almot]

Sam Spade wrote:

I understand that yours is the only acceptable opinion,

Where did this come from, I wonder.

Sam Spade wrote:

you are conveniently overlooking that this person presumably also is involved in camping......where a generator is a really handy accessory.

Seems to be your imagination at play, again. Ebike in RV = likely a camping situation. There hasn't been any discussion of this, or any comments made by me.

Now, stating that on a camping "a generator is a really handy accessory" would be an overlooking indeed. It's handy when you a) have no shore power, b) not enough energy storage for the trip, c) no solar big enough to replenish your energy use. Used to be a common picture 15-20 years ago, yes.

An off-grid scenario was stated by the OP. Duration of trip and related energy storage is unknown. Being a TC, it will be difficult to keep a big bank without expense of LiPo. Carrying generator in TC would be an added inconvenience - maybe, if stored outside, don't know. Big solar will be difficult, though 250-300W should be doable.

[MEXICOWANDERER]

[pianotuna]

As usual Almot has it right. Generators are nasty smelling noisy things that continue to cost for fuel, require maintenance, and must be run even when you don't need power just to keep them exercised. I burn more fuel exercising than I do for needful power. I wish I had had the money to upgrade my solar instead of having the generator.

Almot wrote:

Sam Spade wrote:
You would be MUCH better off to get a small generator.....which can be used for other things too.

Sort of defeats the idea of ebike. Gas-powered moped or scooter would be cheaper to buy then.

40AH is what 200W solar would harvest, under moderately cloudy skies.

[MEXICOWANDERER]

I'll try to answer the question:

The 4th customer in the last six months just returned with a toddler's car he just purchased from the tienda. The kind where the onboard batter runs it for an hour or two. The charger was smoked just like all the others.

All 4 customers are Rancheros living off grid and using panels, batteries and cheap inverters.

With this latest "fix" occurring tomorrow, I will be DEPLETED of my inventory of 600 watt rated DROK 12-60 volt boosters. No problems doing this for the last 22 months. Some vehicles are 6 cell, others are 9 and some 12 cell systems.

Do you feel lucky? Plug in the charger to a cheap modified sine wave inverter. The ranchers told me issuance of smoke from the charger was almost instantaneous, and rancher # 4 inverter quit inverting as well.

[tpi]

Without getting too complex here, if you're going to charge it from the truck, I'd get a pure sine wave inverter that clamps on the battery, not uses lighter socket. Because the battery is 36V, and presumably the amp hour rating is at 36 volt, my thought is the energy equivalent is about the same as a 45 amp hour 12 volt battery. So it will draw down the truck battery quite a bit to do a full charge. Your inverter rating would depend on the charging rate of the charger. Plus a decent safety margin.

I agree with others, if you can scrounge up other reasons for a small generator, why not? That little bike battery could have at least half the capacity of the truck battery (depending on what truck).

[Boon_Docker]

According to the Merriam-Webster dictionary.

Remove: "to cause (something) to no longer exist"
Deplete: "to lessen markedly in quantity, content, power, or value"

😉

[beemerphile1]

How about strapping a generator on the bicycle luggage rack and then you have a hybrid bike instead of an electric bike? :B

[Sam_Spade]

Almot wrote:

For most people .......

As expected, you have a perfect handle on what everybody else in the world knows and wants.

And in making sure that I understand that yours is the only acceptable opinion, you are conveniently overlooking that this person presumably also is involved in camping......where a generator is a really handy accessory.

But what do I know.

[Almot]

Sam Spade wrote:

YOUR idea and purpose for an E-bike is not necessarily exactly the same as everyone elses. GASP.

For instance, they can go on some paths that bikes with gas engines can't.....either because they are officially allowed to or because it's really hard to tell at a casual glance that they HAVE a motor.

For most people the purpose of using a bike is getting around and/or exercising without noise and smell. Ebike makes this easier, extending your range. To carry and run a generator to be able to enjoy a bike - possible, sure. Haven't seen many people doing this so far.

And, it's not hard to tell whether a bike is electric, by looking at it. Too many details will catch your eye, be it a "non-powered" cyclist or somebody enforcing the rule in a place where exactly e-bikes are not allowed.

[MrWizard]

7A @12V drawn for 5 hours will Remove 35 amp hrs from your truck battery, how big is the truck battery

'Deplete' means to Empty aka to use ALL of the resource