<b>Betterbike</b>™ Kits - Electric-Bikes.com

Sealed Lead Acid (SLA) Batteries
LiFePO4 Lithium EV Batteries here. | Chargers for SLA Batteries here

To find the right battery, look at the old one. There will be a number of volts and a number of amp hours (AH) written on the battery. Sometimes the information is "encrypted" into the part number. Examples are UB12100 (12V 10AH), BP12-12 (12V 12AH), DW1212 (12V 12AH), etc. You can verify your choice by checking the dimensions. If you order the wrong batteries, we will exchange them, but you are responsible for shipping.

D&D brand batteries (yellow background) are manufactured to power BMC V1, V2 and Crystalyte systems. They are built to deliver high current and long life - to the same specifications as their their B&B counterparts - but at a lower price.

12 volt Batteries

Click on the Battery to see SPECIFICATIONS

Item

Volts (V)

AmpHours (AH)

Weight (LB)

Length (L)

Width (W)

Height (H)

Total
Height (TH)

Purchase

BP4-12T1

12V

4AH

3.68 LB

3.54L

2.56W

4.02H

4.17TH

$22.99
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BP4.5-12T1

12V

4.5AH

4.06 LB

3.54L

2.76W

4.02H

4.17TH

$23.69
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BP5-12T1

12V

5AH

4.1 LB

3.54L

2.76W

4.02H

4.17TH

$28.99
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HR6-12T1

12V

7AH

4.63 LB

5.94L

2.01W

3.70H

3.86TH

$39.95
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BP7-12T1

12V

7AH

5.73 LB

5.94L

2.56W

3.66H

3.86TH

$25.99
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BP7.5-12T1

12V

7.5AH

5.84 LB

5.94L

2.56W

3.70H

3.94TH

$29.99
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BP8-12T2

12V

8AH

5.84 LB

5.94L

2.56W

3.70H

3.94TH

$33.99
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HR9-12T2

12V

8AH

5.84 LB

5.94L

2.56W

3.70H

3.94TH

$34.95
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D&D Battery

DD10-12T2

BMC V1 and V2
Crystalyte RoadRunner and Sparrow/400 series Electric Bike Kits

12V

10AH

7.28 LB

5.94L

2.56W

4.41H

4.57TH

$36.99
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BP10-12T2

12V

10AH

7.28 LB

5.94L

2.56W

4.41H

4.57TH

$39.99
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D&D Battery

DD12-12T2
BMC V1, V2 Crystalyte Phoenix/500 series Electric Bike Kits

12V

12AH

8.89 LB

5.94L

3.86W

3.70H

3.86TH

$37.99
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BP12-12T2
Standard Replacement
LashOut Bikes
Currie Bikes

12V

12AH

8.89 LB

5.94L

3.86W

3.70H

3.86TH

$42.99
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EB12-12T2
Made for Electric Vehicles

12V

12AH

9.48 LB

5.94L

3.86W

3.70H

3.86TH

$47.95
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EVP12-12T2
25% more
recharge cycles

12V

12AH

9.26 LB

5.94L

3.86W

3.70H

3.86TH

$47.99
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HR15-12T2
greater range,
but 25% fewer
recharge cycles

12V

15AH

9.26 LB

5.94L

3.86W

3.70H

3.86TH

$53.95
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BP17-12B1
Same size as HR22 below, but 25% more recharge cycles

12V

17AH

13.56 LB

7.13L

2.99W

6.54H

6.54TH

$59.99
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HR22-12B1
Same size as BP17 above, but 25% more capacity

12V

22AH

14.3 LB

7.13L

2.99W

6.54H

6.54TH

$75.95
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EB20-12B1
Made for Electric Vehicles

12V

20AH

14.33 LB

7.13L

2.99W

6.54H

6.54TH

$79.95
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EVP20-12B1
Same size as BP17 above, but 25% more recharge cycles

12V

20AH

14.33 LB

7.13L

2.99W

6.54H

6.54TH

$80.99
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BP33-12B2

12V

33AH

24.81 LB

7.68L

5.08W

6.10H

7.05TH

$99.99
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EVP35-12B2-1

12V

35AH

27.57 LB

8.27L

5.08W

6.61H

6.61TH

$124.99
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BP40-12B2

12V

40AH

31.53 LB

7.76L

6.50W

6.73H

6.73TH

$162.99
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HR50-12B2

12V

50AH

31.53 LB

7.76L

6.50W

6.73H

6.73TH

$188.95
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EB50-12B2
Made for Electric Vehicles

12V

50AH

36.38 LB

7.76L

6.50W

6.73H

6.73TH

$169.95
Put in cart for shipping estimate

6 volt Batteries

Click on the Battery to see SPECIFICATIONS

Item

Volts (V)

AmpHours (AH)

Weight (LB)

Length (L)

Width (W)

Height (H)

Total
Height (TH)

Purchase

BP4.5-6T1

4.5AH

2 LB

2.76L

1.89W

4.02H

4.21TH

$16.99
Put in cart for shipping estimate

BP12-6T1

12AH

4.52 LB

5.94L

1.97W

3.70H

3.94TH

$28.99
Put in cart for shipping estimate

Warranty Information: B&B Batteries are guaranteed free from manufacturing defects for a period of one year from purchase. Repeated deep discharge of any lead acid battery will cause it to fail prematurely. This is not a manufacturing defect and will not be covered under warranty.

Making your batteries last

A sealed lead acid battery will survive about 300 discharge/recharge cycles under ideal conditions. Electric Vehicle (EV) use does not present ideal conditions. EVs can draw a tremendous amount of current, and many scooters and bikes will allow the batteries to be deeply discharged.

To get the maximum life from your battery:

Do not discharge beyond 80% of capacity, generally around 10.5 volts. Better products have electronic controllers that prevent deep discharge. Low-end products can allow batteries to be drained completely, a condition from which they will never fully recover.
Recharge immediately after each use. Do not allow them to sit in a discharged state.
Recharge overnight every couple of months when not in use, or use a charger (such as Soneil) that is safe to leave on all the time. It is best if you can run the batteries down a bit before the charge. This will push the charger into a higher initial charge rate, which is good for the batteries.
Dead batteries WILL freeze. Charged batteries will not.
Use a charger rated at 1/2 or less the AH capacity of the battery pack. If you use a 6A charger on a 12AH battery pack, expect the life to shorten somewhat. This is the trade-off for quick-charging.
If you use a fast charger that does not use multi-stage charging, do not leave the battery on the charger after the charge is completed. Low-end chargers left connected will ultimately destroy the batteries since they deliver more current than the batteries can handle once they are fully charged.
If you choose to be "extreme", for the first 10 recharges, run the battery pack down about 25%, then recharge. This will condition the battery, setting it up for a longer life.

B&B Battery Key
The first two letters is the type of battery	BP	General Use	Standard Replacement. Max 300 recharge cycles.
	HR	High Rate	Intended for fast discharge. Will sustain maximum current draw for longer period. Trade-off is that the battery cannot be recharged as many times. Max 200 recharge cycles. ElectroRide™ LLC does not recommend HR for EV use except for racing applications. They have a short life expectancy in EV use.
	EVP	High Power, High Cycle	Sustains high current draw, but not as much as the HR. Max 400 recharge cycles.
	EB	High Power, High Cycle	Made specifically for Mobility Scooters and Electric Vehicles. Max 500 recharge cycles.
The numbers following are the number of amp-hours capacity of the battery. This can be on one of several scales, typically BP and EVP are 20 hour rating and HR is 10 hour rating.
A dash separates the amp-hour capacity from the voltage
The numbers following the dash are the voltage
Last two digits tell the terminal type. Click on the battery and look at the spec sheet to see a picture of all terminal types available on that battery.
Example: EVP12-12T2 is a High Power, High Cycle 12 Amp-Hour (12AH) 12 Volt (12V) battery with a type T2 terminal.

Battery Life Expectancy
Following is a post from a discussion group. The author did a good job explaining, and so many people ask about this, I copied it directly to this page for your convenience. We do not know the author, he/she has nothing to do with ElectroRide™ LLC, and we have not done independent research to verify the information, but it is consistent with our experience.

Elmweaver
10 W

Joined: 23 Nov 2006
Posts: 80
Location: Treasure Island

Posted: Tue Dec 12, 2006 2:38 am Post subject: Sealed Lead Acid Battery Information

I gathered the informtion below from alot of different places on the internet and have put them together in a way I hope will be informative for the user at large. It should be noted that the cycle lifes stated are for general purpose batteries which are the ones commonly used because of low cost.

Some batteries like the B&B Batteries EB Series of batteries are made for high cycle life with deep discharge and will provide more cycles then standard batteries when used for electric transportation needs. The voltages listed below are still valid for all SLA batteries.

This Information is for Sealed Lead Acid (SLA) Batteries Only:

12 Volt batteries have 6 cells each
24 Volts = 12 cells
36 Volts = 18 cells
48 Volts = 24 cells
Fully charged cell voltage = 2.1 Volts
Nominal cell voltage = 2.0 Volts

The recommended end-of-discharge voltage for sealed lead-acid is 1.75 Volts per cell. The discharge does not follow the preferred flat curve of nickel and lithium-based chemistries. Instead, Lead-acid has a gradual voltage drop with a rapid drop towards the end of discharge.

The sealed lead-acid battery should not be discharged beyond 1.75 Volts per cell, nor should it be stored in a discharged state. The cells of a discharged lead-acid sulfate, a condition that renders the battery useless if left in that state for a few days. Always keep the open terminal voltage at 2.10 Volts and higher.

The cycle life of sealed lead-acid is directly related to the depth of discharge. The typical number of discharge/charge cycles at 25�C (77�F) with respect to the depth of discharge is:

* 50 - 100 cycles with 100% depth of discharge (full discharge)
* 150 - 250 cycles with 70% depth of discharge (deep discharge)
* 300 - 500 cycles with 50% depth of discharge (partial discharge)
* 800 and more cycles with 30% depth of discharge (shallow discharge)

Cycle life measured until 80% of original capacity can no longer be recovered by charging.

Betterbike™: Lead Acid Batteries