Uve's Battery Page

Flooded Battery Chart

Model

Volts

Weight (lbs)

lngth

width

height

20 hour (ah)

rsrv cpcty

cost

Cycles (80%)

SCS225

12

66

 

 

 

135

225

$85

 

DEKA 8G27

12

62.5

 

 

 

 

 

 

 

T-105

6

61

10.38

7.13

11.19

225

447

$55

733

T-125

6

66

10.38

7.13

11.19

235

488

$80

650

T-145

6

71

10.38

7.13

11.5

244

530

$95

625

T-875

8

63

10.38

7.13

11.19

150

295

$102

 

T-890

8

69

10.38

7.13

11.19

165

340

$122

 

US 8VGC

8

64.5

10.38

7.13

11.9

165

318

$50

 

5SHP

12

86

13.56

6.75

11.5

165

272

$220

 

Everready DC27-850

12

55

12.5

6.75

9.5

120

180

$55

 

Douglas 31EV

12

66

13

6.81

10.17

135

200

 

 


Sealed Battery Chart

Model

Volts

Weight (lbs)

length

width

height

20 hour (ah)

rsrv cpcty

cost

Cycles (80%)

Optima D750S

12

44.9

10.0

6.8

7.8

65

125

$130

220

Optima D750U

12

46.1

10.0

6.8

7.8

65

125

$119

220

Optima Group 31

12

72

13.0

6.8

9.5

100

190

$140

 

Concorde GPC-1234

12

23

7.68

5.15

7.22

33

50

$58

 

Concorde GPC-1248

12

32

9.41

5.45

9.35

48

84

$85

 

Concorde GPC-1260

12

43

10.2

6.6

9.35

60

106

$102

 

Concorde GPC-1272

12

50

11.82

6.6

9.35

72

114

$114

 

Concorde GPC-1280

12

53

10.2

6.6

9.35

80

149

$118

 

Concorde GPC-1285

12

61

 

 

 

85

159

$138

 

Concorde GPC-1295

12

63

11.82

6.6

9.35

95

176

$152

 

Concorde GPC-12105

12

68

12.95

6.75

9.25

105

190

$166

 

Concorde GPC-4D

12

130

20.73

8.66

10.27

210

380

$301

 

Concorde GPC-8D

12

158

20.62

10.95

10.17

255

561

$376

 

Concorde GPC-6180

6

55

10.4

7.11

10.91

180

317

$145

 

Exide Orbital 34XCD

12

38

10.175

7

7.44

50

95

$98

 

Hawker Genesis G12V38Ah10VP

12

32.9

7.75

6.5

6.69

46

66

 

500

Hawker Genesis G12V70Ah10EP

12

58

13.02

6.62

7.68

72

180

$200

500

Hawker Odyssey PC1200

12

38.2

7.87

6.66

6.8

40

78

 

 

Hawker Odyssey PC1700

12

60.9

13.02

6.62

6.93

65

142

 

 

Hawker Odyssey PC2150

12

75

13

6.8

9.4

88

200

 

 


NiMH Battery Chart

Model

Volts

Weight (lbs)

lngth

width

height

20 hour (ah)

rsrv cpcty

cost

Cycles (80%)

Ovonic (85ah)

12

35

16.1

3

4

112

200

 

800

Ovonic (150ah)

12

49.5

15.16

4.1

8.54

185

384

 

800


LiPoly Battery Chart

Model

Volts

Weight (lbs)

lngth

width

height

20 hour (ah)

rsrv cpcty

cost

Cycles (80%)

mid term

12

21

12.5

6.75

9.5

70

140

$266

600

long term

12

19.5

12.5

6.75

9.5

145

309

$177

1000

VL Module

10.65

17.6

7.5

4.9

9.5

100

216

$177

1500


Note: Battery prices are the lowest price I have been informed of for that battery. These battery prices are not from a specific distributor or even taken at the same time.


use one of the following methods to calculate peukert's values:
Time 1: (min)
Rate 1: (amps)
Time 2: (min)
Rate 2: (amps)

or
20 hour capacity: (ah)
reserve capacity: (min)
enter 20 hour capacity and reserve capacity
Peukert's exponent:
Peukert capacity: (ah)


All of the calculations in this section require peukert's exponent.

time: hours
amps:
amp hours: (ah)

given time period

given amps


More Battery Pages


Battery Frequently Asked Questions

What should I look at when deciding which battery to use?

You should be looking for a low Puekert's number when selecting batteries for you car. A high puekert's number means the battery will not last very long and will have a large voltage sag. I would not use any battery which has a Puekert's number of greater than 1.23.


If I want to have a lot of range, which battery should I use?

Range mainly depends on the weight of the batteries you have in your car.


If I want to have an inexpensive low maintenance battery, which battery should I use?

I would suggest one of the concorde batteries as an inexpensive low maintenance battery. These batteries however can not take the abuse (high currents) that the optima or hawker batteries can.


If I want a high performance car, which battery should I use?

I would suggest the optima or hawker battery for a high performance car.


If I want an inexpensive moderate-low range car, which battery should I use?

I would suggest the T105 battery for an inexpensive moderate-low range car


If I want an inexpensive moderate range low voltage car, which battery should I use?

I would suggest the T105 or T125 battery for an inexpensive moderate range low voltage car


Why is the Peukert's number important when deciding on a battery

The Peukert's number is important because it tells you the internal resistance of the battery. A battery may have a high 20 hour amp-hr rating, but a high Peukert's number. At the currents needed for EVs, this may not be a good battery because the amp-hr rating at a 1 hour rate or 1/2 hour rate can be a lot less then a battery with a lower 20 amp-hr lower Peukert's number. When deciding on a battery, use the calculator on this page to calculate the the 1 hour or 1/2 hour amp-hr rating. This will give a better indication of the range you can expect.


Are there any precuations which need to be taken for sealed batteries?

A sealed battery must not be over charged. If you over charge a sealed battery you will greatly shorten it's life. You can use battery regulators to keep this from happening.


What is cell reversal?

Cell reversal is when a cell in the battery has the opposite value. This usually happens when a cell is charged in the incorrect direction as when the cell is completely discharged and current is still being drawn from the battery.


How do you fix a cell reversal?

Put a resister across the battery over night to completely drain the battery. Then charge the battery with a low current.


How much current can I draw from the battery without damaging the battery?

This depends on the battery and how long you draw the high current. In general, the lower the Peukert's number the high the current you can draw from the battery without damaging the battery.


How do I charge my flooded batteries?

Charge batteries at what ever current until they reach 2.4 v per cell +/- .003v per degree C difference from 25 degrees. The higher the temerature the lower the voltage. Once the batteries reach 2.4v +/-, Keep the batteries at this voltage until the current goes to 2% of 20ah rating. So my 120ah batteries should be charge until the current drops below 2.4 amps. Equalizing should be done about once a week when the batteries are new or very old, once a month during the normal life of the battery. To equalize, charge the batteries at 2% of 20ah rating until voltage stops rising. Make sure you keep track of the water level in the battery while equalizing. Equalizing will use water!


How do I charge my AGM batteries?

Battery Charger: (Constant Voltage) 13,8 to 15,0 volts, 10 amps maximum, 8-10 hours approximate.
Float Charge: 13,2 to 13,8 volts, 1 amp maximum current.
Rapid Recharge: (Constant voltage charger) Maximum voltage 15,6 volts. No current limit as long as temperature remains below 51 degrees C. Charge until current drops below 1 amp. Recharge time will vary according to temperature and charger characteristics. When using Constant Voltage chargers, amperage will taper down as the battery becomes recharged. When amperage drops below 1 amp, the battery will be close to a full state of charge.
Cyclic application or series string applications (CV/CC) only: Constant Voltage with Constant Current finish: 14,7 volts, temperature < 51 degrees C, no current limits. When current falls below 1 amp, finish with 2 amp constant current 1 hour.


If you want to download a comma separated battery table, which you can load into a spreadsheet or other program click here


If you have any information to fill in my chart or have other batteries you want to add to the chart, please email me at uve_rick@netzero.net


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