Help! 48v e bike battery help

[Thatsadz]

So I‘ve got an 48v 1000w conversion kit from eBay and now I need a battery to power it. Will a 48v 10ah batter do ? (480wh) One seller said that it isn’t suitable for the kit but some say they are
Can anyone please help me with this?
Thanks

 

[sjpt]

What's critical for those illegal, inefficient, power hungry 1000w kits is the power the battery can deliver; that is to do with the amps it can deliver. The ah figures give and idea of total capacity, but not ability to deliver it. Bigger capacity batteries often can deliver more as they have more parallel sets of cells, but it depends on the quality of the cells as well. A cheap 10ah battery is unlikely to be able to get the best out of that motor; a really good quality one would probably be just about ok.

 

[Thatsadz]

What's critical for those illegal, inefficient, power hungry 1000w kits is the power the battery can deliver; that is to do with the amps it can deliver. The ah figures give and idea of total capacity, but not ability to deliver it. Bigger capacity batteries often can deliver more as they have more parallel sets of cells, but it depends on the quality of the cells as well. A cheap 10ah battery is unlikely to be able to get the best out of that motor; a really good quality one would probably be just about ok.

Hi thanks for the reply
So what do you suggest will be sufficient for it ? I’m on a budget and already have the 48v 1000w kit

 

[danielrlee]

Hi thanks for the reply
So what do you suggest will be sufficient for it ? I’m on a budget and already have the 48v 1000w kit

Unfortunately, you're not going to get away with a budget option for use with a direct drive motor. Take a look at the following battery with 25R cells (48V 9.8Ah):

EM3ev Super Shark 48V (13S4P) Ebike Battery | EM3ev

EM3ev Super Shark, 48V, 13S4P Frame Ebike Battery. Safe by design, with CNC cell holders, cell level fusing and an Advanced Smart Programmable BMS with Bluetooth. The Shark Pack that we are proud to offer!

em3ev.com

 

[Thatsadz]

Unfortunately, you're not going to get away with a budget option for use with a direct drive motor. Take a look at the following battery with 25R cells (48V 9.8Ah):

EM3ev Super Shark 48V (13S4P) Ebike Battery | EM3ev

EM3ev Super Shark, 48V, 13S4P Frame Ebike Battery. Safe by design, with CNC cell holders, cell level fusing and an Advanced Smart Programmable BMS with Bluetooth. The Shark Pack that we are proud to offer!

em3ev.com

I’ve had a look but it’s comes to £320 which is a bit much , Will a 13ah 48v from eBay work ? I’ve seen some listings advertised as 48v 10ah for a 1000w motor

 

[danielrlee]

I’ve had a look but it’s comes to £320 which is a bit much , Will a 13ah 48v from eBay work ? I’ve seen some listings advertised as 48v 10ah for a 1000w motor

Please post links to both your motor kit and the battery in question and I'll give you my personal opinion.

 

[Thatsadz]

Please post links to both your motor kit and the battery in question and I'll give you my personal opinion.

Sure here they are
Motor kit:

Voilamart EBK-48V1000WR 48V 1000W Electric Bicycle Conversion Kit for sale online | eBay

Find many great new & used options and get the best deals for Voilamart EBK-48V1000WR 48V 1000W Electric Bicycle Conversion Kit at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

Battery:

48V 10A Lithium Battery Fit Motor Power 1000W Electric E-Bike (R001 Series) | eBay

Fit for motor 48V 750W. 48V 1000W 10A Li-ion Lithium Battery Fit Motor Power Electric E-Bike 2A USB. 【Safety Protect ion】 --The Battery equippes with BMS and PCB protective plate in battery. Ordinary lead-acid batteries are placed for two months, only 40%-50% of the nominal capacity.

www.ebay.co.uk

 

[danielrlee]

Sure here they are
Motor kit:

Voilamart EBK-48V1000WR 48V 1000W Electric Bicycle Conversion Kit for sale online | eBay

Find many great new & used options and get the best deals for Voilamart EBK-48V1000WR 48V 1000W Electric Bicycle Conversion Kit at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

Battery:

48V 10A Lithium Battery Fit Motor Power 1000W Electric E-Bike (R001 Series) | eBay

Fit for motor 48V 750W. 48V 1000W 10A Li-ion Lithium Battery Fit Motor Power Electric E-Bike 2A USB. 【Safety Protect ion】 --The Battery equippes with BMS and PCB protective plate in battery. Ordinary lead-acid batteries are placed for two months, only 40%-50% of the nominal capacity.

www.ebay.co.uk

Thanks.

The conversion kit listing lacks some important information. Does the controller supplied with your kit state its 'maximum current' on the label?

 

[Nealh]

As Daniel has mentioned you need to supply links to the items, the controller for the 1kw kit will have an amp rating and any battery will need a continuous amp discharge rating in excess of the controller rating. The 1kw D/D kits are power hungry and even the £320 one using top Samsung 20a rated cells will only see you for about maybe 15 - 18 miles tops.

Of any of us Daniel is the experienced user of these types of hubs so if he say's it will be crap then it will be crap.

Most of us use much lower powered geared hubs/mid drives that are lighter and more user friendly most of them will out do the cheap 1kw in all aspects when the 1kw kits use crappy cheap batteries, the geared hubs/mid drives will out range, out climb and be better generally bar higher end speed above 18/20 mph. In this case bigger doesn't mean better, unless the very good money is spent on the right battery with the very best cells used inside and they don't come cheap. Off the top of my head I can think of about six or seven really good cells that are capable and those won't be used in a cheap ebay battery.

 

[Nealh]

The battery linked to won't cut it or last too long it is only 25a rated continuous and the controller looks to be 28 or 30a +1 capable ( the label isn't very clear to read).
You need a battery with at least a 40a discharge current spec .

 

[Thatsadz]

The battery linked to won't cut it or last too long it is only 25a rated continuous and the controller looks to be 28 or 30a +1 capable ( the label isn't very clear to read).
You need a battery with at least a 40a discharge current spec .

Can you please help me find a good cheap battery that will work

 

[Nealh]

Daniel has mentioned one but it is too steep for your pockets and that is a low Ah one.
Buyers are seduced by the claimed power and speed which are both illegal and are leagally gettable on a cheap moped and some of the reviews left buy buyers.
One buyer said I use it on 250w setting because it eats the battery, totally pointless them buying it. Another says I get 30 miles with my 17ah battery but doesn't mention how much that battery has cost him likely in excess of £600.

 

[Thatsadz]

Daniel has mentioned one but it is too steep for your pockets and that is a low Ah one.
Buyers are seduced by the claimed power and speed which are both illegal and are leagally gettable on a cheap moped and some of the reviews left buy buyers.
One buyer said I use it on 250w setting because it eats the battery, totally pointless them buying it. Another says I get 30 miles with my 17ah battery but doesn't mention how much that battery has cost him likely in excess of £600.

Okay I understand thanks for your help if I got a lower powered kit would options be better?

 

[danielrlee]

Can you please help me find a good cheap battery that will work

Let us know your controller's 'maximum current', or we won't be able to.

 

[Nealh]

Lifepo4 50a continuous this will work but the battery is quite heavy at 19lbs, it is a soft pack so needs to go in a back pack (not advisable) or in a rack bag or in large triangle bag. The battery is a safe chemistry format using lithium iron phosphate, the voltage range is very different to lion but they have very good life cycle. At 20ah it will get you some good miles maybe up to 40 with your power hungry kit.

These batteries are the price and discharge you have to look at for kits like you have bought, buying low power batteries is a waste of your money and you are better sending it to one of us to divvy up between us. We will then spend it far much better then you can.

36V 10Ah Ebike Battery LiFePO4 Lithium for 500W Motor 3A Charger 20A BMS | eBay

Find many great new & used options and get the best deals for 36V 10Ah Ebike Battery LiFePO4 Lithium for 500W Motor 3A Charger 20A BMS at the best online prices at eBay! Free delivery for many products.

www.ebay.co.uk

ENERPOWER Soft Pack Battery Li-ion 48V 13x6 40T Pedelec Ebike 24Ah 40A 3XLR LED | eBay

Find many great new & used options and get the best deals for ENERPOWER Soft Pack Battery Li-ion 48V 13x6 40T Pedelec Ebike 24Ah 40A 3XLR LED at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

 

[Thatsadz]

Let us know your controller's 'maximum current', or we won't be able to.

There is no label indicating the max current , there’s a lot of videos on YouTube where people are running 48v 1kw kits. Would a 500w kit be better for me to get. I’ve ordered the motor kit but I can try to cancel it

 

[Thatsadz]

Lifepo4 50a continuous this will work but the battery is quite heavy at 19lbs, it is a soft pack so needs to go in a back pack (not advisable) or in a rack bag or in large triangle bag. The battery is a safe chemistry format using lithium iron phosphate, the voltage range is very different to lion but they have very good life cycle. At 20ah it will get you some good miles maybe up to 40 with your power hungry kit.

36V 10Ah Ebike Battery LiFePO4 Lithium for 500W Motor 3A Charger 20A BMS | eBay

Find many great new & used options and get the best deals for 36V 10Ah Ebike Battery LiFePO4 Lithium for 500W Motor 3A Charger 20A BMS at the best online prices at eBay! Free delivery for many products.

www.ebay.co.uk

It looks like a good battery but is a lot more than I have to pay I’m thinking of just going lower powered

 

[sjpt]

You'd do better with a legal 250w geared kit. (or a 350w Yose one, not technically legal but nobody will notice the difference).

If you can cancel the 1kw one I certainly would. Suitable for fast fairly level off-road riding and not much else.

 

[Nealh]

Sony VTC5, cells rated 20a battery is 30a continuous. A soft pack with triangle frame bag. This is the cheapest best battery you will find with 20a rated cells.

ENERPOWER Softpack Akku Li-ion 36v Vtc5 10 4ah Pedelec 30a BMS Umbausatz Tasche for sale | eBay

Find many great new & used options and get the best deals for ENERPOWER Softpack Akku Li-ion 36v Vtc5 10 4ah Pedelec 30a BMS Umbausatz Tasche at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

 

[Thatsadz]

You'd do better with a legal 250w geared kit. (or a 350w Yose one, not technically legal but nobody will notice the difference).

If you can cancel the 1kw one I certainly would. Suitable for fast fairly level off-road riding and not much else.

A 500w kit from eBay runs me about £140 , is this the best option for a good 500w capable battery?