Gents,
just thought I'd give my fellow countrymen the opportunity to get some really top quality Battery Packs at very competitive prices. I'm keeping the prices in USD as I think this is the fairest way as it is pretty much pegged to the Chinese RMB and I'd rather give everyone a level playing field rather than bump the pound price up to cover currency fluctuations.
Bare cells are presently available at 37.50USD per 15Ah cell (typically test at 16Ah Plus). 20Ah cells are 50USD per pc. This is cheaper than the typical A123 26650 prices per Ah which are generally about 7USD for a 2.3Ah cell, or 3USD/Ah a opposed to my price of 2.5USD/Ah.
The cells have the highest energy density of any available LiFePO4 cell. Weights and dimensions, not including tabs are as follows:
Model: AHP 70165227 Model: AHP 68150211
Capacity: 20Ah Capacity: 15Ah
Size: 7.0X 166X227mm Size: 6.8X 150X211mm
Weight: 480g Weight: 400g
This works out to 137.5Whrs/kg for the 20Ah and 123.75Whrs/kg. When you consider that the 20Ah cells actually weigh 467g and the 15Ah cells are typically 16Ah, this equates to 141Whrs/kg and 132Whrs/kg for the 20 and 15Ah cells respectively. High energy density Lifepo4 is typically 100Whrs/kg. These cells also give high power and are capable of approximately 20C constant but I would recommend usage of around 10C average even if high peak currents well beyond this are used. A pack made of these is on a completely different level to typical 2 or 3C packs. Figures such as 7000 cycles and 10-15 years lifecycle in the EV application they were intended for are claimed.
I've spent a lot of time to develop a pack termination method I'm now happy with and the price breakdown is as follows for a 1p type pack:
- termination parts = 2USD per cell
- power plugs, both sides (controller and battery side), dual pole 50A (2pcs) = 6USD or Power Pole 45A (2 pairs) = 4USD
- assembly including parts, connecting a BMS, heat shrink, basic mechanical protection and electrical isolation = 3.5USD per cell
- assembling the pack with terminations only, for end user to implement into their own case = 2.5USD per cell
Parts prices:
Chargers USD
36V 5A 61
48V 5A 65
BMS
12S 30A 46
12S 60A 88
16S 30A 54
16S 80A 95
High Power Connectors
2 pole 175A = 10USD per connector
75A Power Pole = 6USD per pair
2 pole 350A = 15USD per connector
heat shrink (63cm) = 3USD per m
Below are some examples of fully assembled packs. Part assembled packs will be a little cheaper as per my above details. It is very straightforward to tie in a BMS, so you're welcome fix your own method for pack balancing, HVC and LVC protection. I'm not a believer in going without a BMS and do not think it will work very well with these cells. They rise so quickly at the end of the charge it is essential to have some cell level balancing/protection IMO.
Example fully assembled Pack Pricing, not including charger:
12S 15Ah
Description Quantity Unit cost Sub Total
15Ah Cell 12 37.5 450
30A Const BMS 1 46 46
Termination Parts 12 2 24
Full Assembly/Parts 12 3.5 42
45A Power Pole (pair) 1 2.00 2
Total 564 USD
16S 15Ah
Description Quantity Unit cost Sub Total
15Ah Cell 16 37.5 600
30A Const BMS 1 54 54
Termination Parts 16 2 32
Full Assembly/Parts 16 3.5 56
45A Power Pole (pair) 1 2.00 2
Total 744 USD
12S 20Ah
Description Quantity Unit cost Sub Total
15Ah Cell 12 50 600
30A Const BMS 1 54 54
Termination Parts 12 2 24
Full Assembly/Parts 12 3.5 42
45A Power Pole (pair) 1 2.00 2
Total 722 USD
16S 20Ah
Description Quantity Unit cost Sub Total
15Ah Cell 16 50 800
30A Const BMS 1 54 54
Termination Parts 16 2 32
Full Assembly/Parts 16 3.5 56
45A Power Pole (pair) 1 2.00 2
Total 944 USD
Shipping is by either EMS at 35% discounted price, Air Freight which is generally a bit cheaper than EMS for most countries, sometimes significantly cheaper. The slow boat is also available and that is cheap, but can take a looooong time if you're unlucky and miss the boat... Paypal is 6% (my cost, 3.4% commission plus 2.5% money exchange commission, thieving bast....s :evil: ) or wire transfer to Hong Kong with no commission and much preferred. Buyer pays the bank fees.
I'm very busy with a big parallel pack termination that I must finish but would give a lead time of 1 week (at present) for a standard pack build (should be quicker but I'd rather not make too many promises). If you want a pack built I'll accept a 100USD deposit and the remainder before shipment or just pay it up front, up to you.
just thought I'd give my fellow countrymen the opportunity to get some really top quality Battery Packs at very competitive prices. I'm keeping the prices in USD as I think this is the fairest way as it is pretty much pegged to the Chinese RMB and I'd rather give everyone a level playing field rather than bump the pound price up to cover currency fluctuations.
Bare cells are presently available at 37.50USD per 15Ah cell (typically test at 16Ah Plus). 20Ah cells are 50USD per pc. This is cheaper than the typical A123 26650 prices per Ah which are generally about 7USD for a 2.3Ah cell, or 3USD/Ah a opposed to my price of 2.5USD/Ah.
The cells have the highest energy density of any available LiFePO4 cell. Weights and dimensions, not including tabs are as follows:
Model: AHP 70165227 Model: AHP 68150211
Capacity: 20Ah Capacity: 15Ah
Size: 7.0X 166X227mm Size: 6.8X 150X211mm
Weight: 480g Weight: 400g
This works out to 137.5Whrs/kg for the 20Ah and 123.75Whrs/kg. When you consider that the 20Ah cells actually weigh 467g and the 15Ah cells are typically 16Ah, this equates to 141Whrs/kg and 132Whrs/kg for the 20 and 15Ah cells respectively. High energy density Lifepo4 is typically 100Whrs/kg. These cells also give high power and are capable of approximately 20C constant but I would recommend usage of around 10C average even if high peak currents well beyond this are used. A pack made of these is on a completely different level to typical 2 or 3C packs. Figures such as 7000 cycles and 10-15 years lifecycle in the EV application they were intended for are claimed.
I've spent a lot of time to develop a pack termination method I'm now happy with and the price breakdown is as follows for a 1p type pack:
- termination parts = 2USD per cell
- power plugs, both sides (controller and battery side), dual pole 50A (2pcs) = 6USD or Power Pole 45A (2 pairs) = 4USD
- assembly including parts, connecting a BMS, heat shrink, basic mechanical protection and electrical isolation = 3.5USD per cell
- assembling the pack with terminations only, for end user to implement into their own case = 2.5USD per cell
Parts prices:
Chargers USD
36V 5A 61
48V 5A 65
BMS
12S 30A 46
12S 60A 88
16S 30A 54
16S 80A 95
High Power Connectors
2 pole 175A = 10USD per connector
75A Power Pole = 6USD per pair
2 pole 350A = 15USD per connector
heat shrink (63cm) = 3USD per m
Below are some examples of fully assembled packs. Part assembled packs will be a little cheaper as per my above details. It is very straightforward to tie in a BMS, so you're welcome fix your own method for pack balancing, HVC and LVC protection. I'm not a believer in going without a BMS and do not think it will work very well with these cells. They rise so quickly at the end of the charge it is essential to have some cell level balancing/protection IMO.
Example fully assembled Pack Pricing, not including charger:
12S 15Ah
Description Quantity Unit cost Sub Total
15Ah Cell 12 37.5 450
30A Const BMS 1 46 46
Termination Parts 12 2 24
Full Assembly/Parts 12 3.5 42
45A Power Pole (pair) 1 2.00 2
Total 564 USD
16S 15Ah
Description Quantity Unit cost Sub Total
15Ah Cell 16 37.5 600
30A Const BMS 1 54 54
Termination Parts 16 2 32
Full Assembly/Parts 16 3.5 56
45A Power Pole (pair) 1 2.00 2
Total 744 USD
12S 20Ah
Description Quantity Unit cost Sub Total
15Ah Cell 12 50 600
30A Const BMS 1 54 54
Termination Parts 12 2 24
Full Assembly/Parts 12 3.5 42
45A Power Pole (pair) 1 2.00 2
Total 722 USD
16S 20Ah
Description Quantity Unit cost Sub Total
15Ah Cell 16 50 800
30A Const BMS 1 54 54
Termination Parts 16 2 32
Full Assembly/Parts 16 3.5 56
45A Power Pole (pair) 1 2.00 2
Total 944 USD
Shipping is by either EMS at 35% discounted price, Air Freight which is generally a bit cheaper than EMS for most countries, sometimes significantly cheaper. The slow boat is also available and that is cheap, but can take a looooong time if you're unlucky and miss the boat... Paypal is 6% (my cost, 3.4% commission plus 2.5% money exchange commission, thieving bast....s :evil: ) or wire transfer to Hong Kong with no commission and much preferred. Buyer pays the bank fees.
I'm very busy with a big parallel pack termination that I must finish but would give a lead time of 1 week (at present) for a standard pack build (should be quicker but I'd rather not make too many promises). If you want a pack built I'll accept a 100USD deposit and the remainder before shipment or just pay it up front, up to you.
