About $7 per watt-hour to purchase, and less than a penny to operate - less than half the cost of other batteries.
Longer than any other type of battery - plus they have More than 10 years of shelf life, and can be used up to 1000 cycles - 3 times longer than other types.
20 minutes to top up, and less than 3 hours to fully charge, with the standard charger.
LibertyPaks have been in use since 2002 and have an impeccable safety record. As long as they have not been altered, and use the appropriate charger, they are as safe to use as any other rechargeable type.
They can be rented from grip, lighting, and camera rental houses, and are available for purchase directly from LibertyPak.
LibertyPaks last 300 to 400% longer than other types of batteries. This means one belt will operate a 400-watt HMI for an hour, instead of 20 minutes. Generally speaking, there are 100 watt hours per every 2 pounds in LibertyPaks, compared to 40 for other chemistries, like NiMH. This means more power and a much less weight. Less weight translates to lower shipping costs and fewer injuries.
As to how many years they will run, most packs are still working after many years of operation - since 2002 - and may not need servicing or updating for 5 years or more.
Yes, we offer an unconditional 30-day satisfaction guarantee on all products as long as you return the product in good condition with the original packaging materials. All LibertyPak products have One Year Warranties on manufacturing defects, which might affect battery life and circuitry, and we pro-rate the cells for 3 years. Other items, such as solar panels and chargers have individual warranties, which will vary.
Basically, they are superior in every practical and measureable way. More power per ounce, no maintenance, 100% power at sub-zero temperatures, better performance and longer life span. (Performance)
Each LibertyPak costs more to purchase initially than any other popular battery pack. This is because they contain more available watt-hours of power than any other pack. The actual cost of a LibertyPak when measured in Watt Hours is much less than any Lithium based battery, and the same or less than NiCad or NiMH battery packs. As a matter of fact, over the long run, LibertyPaks cost less to operate than any type of motion-picture battery system, including lead-acid. Over time, LibertyPaks cost as little as 1 cent per watt-hour to own and operate. (Cost)
Yes. However, as long as the charger is meant for Lithium Ion, is of the correct charging voltage and amperage, and has proper UL and European safety ratings, they will most likely work for LibertyPaks. However, Do NOT use chargers designed for NiCad's, NiMH or Lead Acid. Use of any charger not matched to the LibertyPak may void any warranty, and LibertyPak will not be liable for any damages arising from misuse. When specified, the 12-volt LibertyPaks can be recharged from a CAR LIGHTER with a simple adapter. And all LibertyPaks can be charged directly from SOLAR PANELS with
the proper connectors. Contact us for approval before using any charger other than the one, which is included with your LibertyPak, or for any question regarding charging procedures.
Yes, they are. Fortunately, the final voltage drop-off voltage often occurs below the operational voltage of the equipment being used. The final voltage drop-off occurs during the last 10% of battery capacity, which is less than 10 volts for the LP 12 V and just above 20 volts for the LP 24 V. The voltage stability for LibertyPaks is very flat in comparison to other batteries, even flatter and more stable than other Lithium Ion chemistries, assuring more consistent performance, and higher voltage per minutes of life, over more than 2000 cycles.
LibertyPaks are maintenance free. It would take over a year before they lose even 10% of their charge Some battery types lose 25% of their charge in the first 24 hours. Others
require periodic discharging and re-charging to keep up to capacity.
LiberytPaks have been in constant use by camera and lighting professionals since September of 2002 without incident. Every type of battery can become unsafe under certain conditions. LibertyPaks have proprietary protective circuitry to control input and output voltages. The cells have internal safeguards to prevent short circuits, hi and low voltage levels, and high temperature malfunctions. Most types of high quality batteries will have similar safety circuits, but in the event of accidental puncture or spilling of contents they can be quite toxic and environmentally dangerous. Nothing in a LibertyPak is environmentally hazardous, and they are non-toxic. LibertyPaks are safe to transport, to operate, and maintain. For detailed drop, puncture, short, under and overcharge statistics please read the Safety Reports. Cell Safety Reports
Because LibertyPaks are made of the highest quality lithium ion cells, and are well protected against imbalance and under-voltage levels, they can be completely discharged at high current levels and re-charged at high current levels without any short or long term damage to their performance or cycle life. For instance, a LibertyPak Lighting Belt can be discharged completely in 90 minutes, and then recharged in 90 minutes continuously over 300 times before any appreciable drop in performance would be observed. As with all batteries, time should be allowed to cool down before echarging.
LibertyPak has received certification of compliance with the UN-DOT guidelines by an Authorized Government testing facility. LibertyPaks that have this certification are safe to fly without regulation or special labeling. LibertyPak belts and blocks which contain certified battery packs are devices which meet the safety requirements set forth by the ATA, IATA and DOT. Test Results are available on request.
