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CSB Battery 6v 4.5 AH Deep Cycle Sealed Lead Acid Battery

Was: $23.00
Sale Price: $18.95
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Product InformationStore Part Number: SLA-640


Replaces: Ps640f1, ub640, UB645, UB645K

The CSB GP645 is a general-purpose battery designed to last up to 5 years in standby service and ships with F1 style connectors. As with all CSB batteries the GP 645 is a rechargeable sealed lead acid battery, and is highly efficient battery with a leak proof maintenance free design.

NON-SPILLABLE by DOT (Department of Transportation), ICAO (International Civil Airline Organization) and IATA (International Airline Transportation Association) definitions.


  • Maintenance-Free Sealed Lead Acid Battery
  • Absorbent Glass Mat (AGM) technology for efficient gas recombination of up to 99% (often referenced as Gel Cell)
  • Leak Proof/Spill Proof
  • F1 Terminals
  • Low Self Discharge: Less than 10% after 90 days, can be stored up to 6 months at 25°C (77°F).


*Free Shipping is for the Lower 48 United States for large orders that qualify for a per item discount. Large orders that qualify for a per item discount does not include fees for highly rural location, hard to reach locations, islands or location requiring ferry's. These locations may be subject to additional shipping fees. You will be advised prior to your order being processed if additional fees are required, at which point you may proceed with the order if accepted.

Tech Specs

  • Dimensions (LxWxH): 2.76 x 1.89 x 4.02 in
  • Terminal Height: 4.23
  • Weight: 1.89 lb
  • Shipping Weight: 3 lb
  • Maximum Charging Current: 1.35 A
  • DC Output Voltage: 6 V
  • Amp/Hr: 4.5 AH
  • Model: GP Series
  • Manufacturer: CSB Battery
  • Resistance: 18.5 mΩ
  • Operating Temperature: -5° to 122° F
  • Charging Temperature: -5° F to 104° F
  • Enclosure: ABS Plastic
  • Charging Voltage Standby Use: 6.75 - 6.9 V
  • Cycle Service Charging Voltage: 7.2 – 7.5 V
  • Manufacturer Part #: GP-645-F1
  • Made In: Asia
  • Terminal Position:

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Reviews and Ratings

5.00 Average
5 Stars 2
4 Stars 0
3 Stars 0
2 Stars 0
1 Stars 0
Rated 5.00/5 Stars from 2 customer reviews.

Do you own the SLA-640? Please, tell us what you think about it. It helps us provide you with better products. Please note that it may take up to 72 hours for your review to appear.

6 volt 4.5 amp hour Battery
Pros: We just purchased one of your products (6 volt 4.5 amp hour Battery) and was delivered within 2 weeks. The battery was neatly packed, charged, and ready to go. We reside in Okinawa, Japan and there has been numerous issues with shipping with other companies in the U.S. Your company, Outstanding shipping and product! Matter of fact, I just happen to browse your web site, looking for a specific battery. I used your "technical department" by sending an E-mail and had a reply and an answer within a day. (Very impressive!!) Great! Customer Service. For future reference, will be our first stop, when in need of any type of batteries.
Cons: NA!
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Written by on Apr 30, 2012. Ownership: Just Bought. Knowledge Level: AC/DC is more than a band — (87 of 169 customers found this review helpful
Arrived quickly, work well
I use these batteries to power LED lights in and around a chicken coop during the long winter nights. They mount to the coop easily using plastic electrical boxes and provide power for about a month before being re-charged. Very happy.
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Written by on Oct 30, 2020. Verified Purchase

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Specification Sheet

Order Line: 1-800-362-5397
M–F 6am–5pm PST
Tech Help: 541-474-4421
Fax: 541-471-6014
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Grants Pass, OR 97526
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