• date_rangePosted On :   Oct 21' 2009
  • location_cityCity :   Spetchley
  • languageCountry :   UK
  • content_pasteEnquiry No. :   9102142

Dear Suppliers/Manufacturers,
We are looking for the suppliers or manufacturers
who can supply battery (18v Li-ion)
The details and specs are:
18V Li-ion battery pack
5 cell pack with PCB
Plastic housings to be free issued to pack assembler.
To be suitable for range of garden power tool product applications
Normal discharge current in range of 1.5 ~ 9A
In extreme use discharge current 12A max
Over current protection should not cut out with initial high
start up spike current of grass trimmer.
PCB to provide a safe reliable protection
Battery pack will be subject to 3rd party testing for safety
and durability in abusive conditions.
Li-ion 18650 cell:
Nominal cell capacity: 1900mAh minimum
Nominal voltage: 3.7V
Charging voltage: 4.2V+/-0.05V
Max discharge current: 12A
Charge time: 3 hours (should also be suitable for option of 1 hour fast charge)
Charging method: constant current - constant voltage
Charging temperature: 0 ~ 40 deg C
Operating discharge temp: -20 ~ +60 deg C
Storage temp: -20 ~ +50 deg C
Life cycle: min 90% capacity after 400 cycles in product use
Cell dimension (max): length 64.8mm, dia 18.1mm
To be verified by supplier
PCB:
Over charge protection: 4.25V +/-0.025V / cell
Over discharge protection cut off: 2.70V +/-0.080V / cell
Over-current protection 1: 20A +/-1A at 1s
Over-current protection 2: 50A +/-5A at 200ms
Discharge temperature protection: 75+/-8 deg C
Discharge temperature protection release: 60+/-5 deg C
High charging temperature protection: 45 +5/-0 deg C
Low charging temperature protection: 0 +5/-0 deg C
3 hour charge time but need to allow for 1 hour charge as future option
PCB Spec to be verified by supplier and any additional guidelines provided.
To be suitable for range of product applications
Normal discharge current in range of 1.5~9A
In extreme use discharge current 12A max
Please quote us your best FOB/CIF prices along with the
technical specifications of the product.
We will be awaiting your kind response.
Thanks and hope to receive your offers soon.

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