Best Digital Camera Under 200

Battery power?

I have a go-kart with 8″ rims. It weighs 300 lbs without the motor. If I wanted to turn this into an EV, how powerful of an electric motor would I need? Would 7 hp be enough? I want it to be really powerful. How many car batteries would I need to power the motor for 3 hours considering I will be driving it pretty fast most of the time.

I think 7HP is much more than you need. 1HP is probably more appropriate. You’re starting at a major disadvantage. 300 lbs without motor, battery, or driver is very heavy for an EV. You’ll never get enough battery into it, especially with standard lead-acid car batteries. You don’t want those anyway, you want at least deep discharge RV/marine batteries, or a much more modern chemistry. See the first reference and look around it. The commute car is very high performance with a very good range. But it costs in the ten-twenty thousand dollar (US) range. For the ultimate, see the second reference. It’s real, I know the people. But the price tag for the first generation is US $100,000.

There’s a good reason electric cars are not yet common. The enabling technology is just now being developed. With further development and volume manufacturing, the prices should drop considerably.

My son has a new electric bicycle. It’s very practical for commuting, but the cost is still around US $6000. Good range and speed. It keeps up well with expressway traffic.

If you just want to play around, get the biggest standard RV/marine battery you can, and a used auto starter motor from a junk yard. Get a few, since you’ll probably burn them out. You probably can’t afford to play around with gears or electronic motor controllers, so just gear it for its top speed of maybe 5MPH and use a very heavy duty foot switch and/or use the starter relay. It won’t be a smooth start, but it would work.

AC ADAPTER FOR SONY PCG-K33 PCG-K35 PCG-K37 BATTERY CHARGER POWER CORD SUPPLY $13.99

AC ADAPTER FOR Sony Vaio PCG-K45 PCG-9P6L PCG-K47 BATTERY CHARGER POWER SUPPLY $12.99

AC ADAPTER FOR SONY VAIO VGN-NS225J VGN-NS225J/L BATTERY CHARGER POWER SUPPLY $9.99

AC ADAPTER FR ACER Aspire 6530g 6530G-702G25Mn BATTERY CHARGER POWER CORD SUPPLY $18.99

portable backup battery charger leather case power bank for iphone 4 4G 4S 4th $24.00

BATTERY for Samsung SCH-r810 Finesse + Power AC Charger $2.76

5w 12v new mono solar panel waterproof power energy charger for battery,camping $8.38

2800mAh External Portable Backup Battery Power Charger for iPhone 4 4s 3GS 3G $17.99

External Flash Power Battery Pack Fr Nikon SD-9A SB-900 $38.99

5w 12v solar panel,solar energy power Charger for battery,RV,car,high efficiency $37.36

SONY HANDYCAM AC MAINS ADAPTER ADAPTOR BATTERY CHARGER POWER SUPPLY DCR-TRV740 $18.16

10w 12v poly solar panel portable power energy charger for battery-free shipping $49.42

AC ADAPTER FOR Toshiba Satellite A200-23K A200-23M BATTERY CHARGER POWER SUPPLY $18.70

Coleman Camping Hiking Battery Powerful Window Cool Fan $28.38

Oncore Power Latitude D-series Notebook Battery – Lithium Ion (li-ion) – 11.1v $85.51

External Backup Battery Charger power Case cover For iPhone 4 4S 4G 4th black $9.99

New External Battery Extra Power For iPhone 4 4G White $15.00

White Battery Powered Doorbell Visitor Chime Door Bell $6.59

White 1800mAh External Backup Battery Charger Power Case Cover For iPhone 3G 3Gs $14.21

Battery fit CANON Power Shot S410 NB-1LH Digital Camera $149.90

90w Adapter Battery Charger Hp Pavilion DV6200 DV6400 DV6500 Power supply Cord $0.49

SONY HANDYCAM AC MAINS ADAPTER ADAPTOR BATTERY CHARGER POWER SUPPLY DCR-TRV730 $18.16

Children Battery Powered DIY Motor Buggy Car Model Toy $10.42

BG-E5 Multi-Power Battery Pack Grip For Canon EOS 450D 500D 1000D Camera $64.50

BG-E6 Multi-Power Battery Pack Grip For Canon EOS 5D Mark II LP-E6 $62.50

4400mAh Rechargeable Battery Pack + One US Power Charger for Headlamp $9.99

BG-E7 Camera Multi-Power Battery Pack Grip For Canon EOS 7D EOS7D LP-E6 $63.80

AC ADAPTER FOR MSI A5000-436US S6000-017US BATTERY CHARGER POWER CORD SUPPLY NEW $9.99

AC Adapter For MSI CR500-438US CR620-033US Battery Charger Power Supply Cord $13.99

BG-E8 Multi-Power Battery Pack Grip For Canon EOS 500D 600D T2i Kiss X4 $63.80

AC Adapter Power Cord Battery Charger Fujitsu FPCAC67AP $12.99

Mango Shaped Pink Battery Powered Cool Cooling Fan $5.67

30 POWERONE POWER ONE hearing aid batteries sz 675 P675 EXP2014 $11.50

Cordless Battery Powered Screwdriver- Batteries and 2 Driver Bits Included! $9.49

black backup battery power bank leather case cover charger for iphone 4 4G 4S $20.00

60 POWERONE POWER ONE hearing aid batteries sz 675 P675 EXPIRATION 2014 ZINC AIR $21.49

BG-E9 BGE9 Multi-Power Battery Pack Grip For Canon EOS 60D Camera LP-E6 $63.80

AC Adapter Power Supply Battery Charger for Sony Vaio VGN-BX VGN-A VGN-C Series $0.25

BG-E2N Multi-Power Battery Pack Grip For Canon 20D 30D 40D 50D BP-511A $69.50

MB-D10 Camera Multi-Power Battery Pack Grip For Nikon D300 D300S D700 $68.50

Power Tool Battery replacement for Makita 3700DW 6022DW 6012DW New $24.95

MB-D11 Camera Multi-Power Battery Pack Grip For Nikon D7000 EN-EL15 $79.80

MB-D80 Multi-Power Battery Pack Grip For Nikon D80 D90 Camera EN-EL3E $78.80

Notebook Battery Charger Power Cord For HP DV4-2145DX $7.51

New Power Tool Battery replacement for Makita 3700D 4071D 4073D 4307D $24.95

AC Adapter Battery Charger For Toshiba Satellite L755D Laptop Power Supply Cord $9.99

Battery Charger power for MSI Wind U120 U120H U115 X100 $8.79

Battery Power Charger for Toshiba Satellite M115-S1061 $8.50

6 DECK AUTOMATIC BATTERY POWER OPERATED ELECTRIC ELECTRONIC CARD SHUFFLER $24.99

Battery Power Charger for Acer Aspire 3050 4710 5001 $13.45

Brand New GT-5W Guitar AMP battery powered Black $21.98

2300mAh G14 High Power Capacity Battery For HTC Sensation 4G Pyramid G14 Z710e $16.99

5000mAh Universal Portable Dual USB External Back-up Battery Charger Power Bank $19.49

Duracell Battery Chargers Camping Outdoor Power Source $185.07

Large Capacity Automatic Aquarium Fish Tank Food FeederNew — BATTERY POWER — $0.77

4 Port Solar Powered Battery USB Hub & Charger Adapter $14.99

5000MAh Power Bank External Battery for iPad & iPhone -White $11.99

AC Adapter Battery Charger Power Supply 4 HP Mini 5103 $7.51

AC Adapter Battery Charger Power 4 HP Mini 5103 WZ288UT $7.51

4000mA Digital Power Bank Battery Pack Charger $29.99

SONY HANDYCAM AC MAINS ADAPTER ADAPTOR BATTERY CHARGER POWER SUPPLY DCR-TRV525 $18.16

New AC Adapter For MSI E7235-295US E7405-080US Battery Charger Power Supply Cord $21.99

AC Adapter For MSI Wind Box DC520 DE520 Series Battery Charger Power Supply Cord $29.99

Yoobao 6600mAh Portable Power Bank Battery Charger For iPhone 4 4S iPad 2 Galaxy $40.99

AC ADAPTER FOR DELL 7KP4X 331-0536 MK911 BATTERY CHARGER POWER CORD SUPPLY NEW $11.85

MiLi Power Shine 4000 mAh Portable Battery For iPhone 4S & 4,iPad*,Tablet PC etc $84.99

Battery Power Rechargeable Charger Case External Emergency Extra Fr iPhone 4 Gen $11.30

New 3 in 1 Travel Charger Battery Power Supply Pack Kit for 3DS Console $19.99

IMAX B6 Li-Po NiMh Li-ion Battery Balance Charger + Power Supplier D479 $45.90

AC Adapter For MSI CR640 CR650 Series Notebook Battery Charger Power Supply Cord $17.50

Travel External white Power Battery Charger Fr iPhone 4 iPod Touch Nano new $5.60

Replacement EnEl9 EnEl9a Lithium Battery Fr Nikon D5000 D3000 D60 D40 Power Grip $7.40

In Car Windshield Solar Battery Power Air Ventilation Heat Exhaust Radiator Fan $10.40

NEW! USG Accessory AC Power Battery Charger for GPS Travel/Road Trip/Car Device $10.95

Computer PC USB Power 2 Slot Charger AA AAA Rechargeable Battery Charging Device $2.45

Targus Battery-Powered 2.4 GHz Wireless Comfort Micro USB Laser Mouse up to 33′ $41.95

Vtech AT&T Accessory Power 59768 300mAh 3-1/2AA-A 3.6 V Capacity NiCad Battery $16.95

NEW Vtech AT&T Accessory Power 4050 300mAh 3-1/2 AA Cells 3.6 V Capacity Battery $12.95

Rechargeable Dock Power Battery Charger For 2 PS3 Dual Shock Wireless Controller $5.30

Travel Backup Power Spare Battery Pack Charger Case For iPhone 4 th 4G 16GB 32GB $15.30

8AA BATTERY HOLDER PACK ENCLOSED 12V DC POWER PACK 2.1MM tip 12 volt dc Cable $9.99

For iPod Touch 4 iPhone 4G S Gen Backup Power Rechargeable Battery Charger Block $6.60

Sun Power YELLOW Solar Battery Digital Calendar Stop Watch LED Sport Wrist Watch $7.40

Solar Battery Sun Powered In Car Bluetooth Handsfree Speakerphone Call Receiver $28.30

new External Power Emergency Battery Charger Case Cover Dock For iPhone 4 $15.30

For iPhone 3G iPod Power Station Battery Charger FDE16C $18.78

Battery Charger Panel Solar Sun Power Block Recharging MP3 Players DC Camera $6.70

Sun Powered Solar Battery Panel Scary Real Cockroach Roach Prank Kids Toy Robot $2.55

Lithium AA AAA 9V Cell Battery Volt Power Indicator Tester Batteries Checker $3.30

Power Battery Charger Portable Backup Block For iPod Touch 4 iPhone 4G Gen $6.60

LED Cree Bulb Battery Power Flash Light Flashlight Hand Torch BRIGHT Wrist Strap $10.50

OEM Original Internal Power Battery Apple iPhone 4 4G $11.99

Emergency Backup Power External Battery Pack Charger For iPhone 3 3GS 4 4G iPod $5.60

LED Battery Powered NO INSTALL Press Tap Kids Children Bedroom Night Light Lamp $2.00

Battery Inside Phone Case Cover External Charger Fr iPhone 4 4G 4th Backup Power $11.30

AUTO Desktop Electric Color Pencil Sharpener USB 3 LED Light /Battery Dual Power $7.70

Battery USB Dual Power Smokeless Ashtray Air Purifier Cigrette Holder Litter Box $6.90

Global NEW AC Adapter For Kenwood W08-0657 W080657 Power Supply Battery Charger $9.99

Backup Power Rechargeable Battery Charger Case Cover Fr iPhone 4 4S S th 4G Gen $11.30

NEW AC Adapter For KENWOOD W09-0684 W090684 Audio Power Supply Battery Charger $9.99