difference in lead-acid & Lithium batteries? at DVinfo.net

Chris Hink · May 11th, 2005, 07:27 AM

I need to get new batteries for my Vx1000. I was going to get the standard Sony info-lithium NP-730H but I noticed at B&H they also have a brand called Bescor that is a 'Lead-acid' battery for the same price.

Here's their descriptions:
Bescor JB-5DNC Lead-Acid Battery Pack (8v, 4.2amps)

Sony NP-F730H, L Series, Info-Lithium, Battery Pack (7.2v, 3000mAh)

What is the real world difference with these?

Dan Diaconu · May 11th, 2005, 08:05 AM

Lead-acid is the same kind as found on cars, wheel chairs, etc.
http://www.batteryuniversity.com/partone-6.htm
http://hyperphysics.phy-astr.gsu.edu.../leadacid.html

Biggest, heaviest/power delivered. Slow descharge (linear) vs. log on lithium.
Stick with lithium.(cell phones use LiIon not lead-acid and they're OK)
Li polymer deliver many times what the LiIon can due to "sponge-like" surface of electrolites vs plane surface.For the same reason, the power and charging time are supperior to anything previously sold.
http://www.allegromicro.com/techpub2/cadex/index35.htm
http://www.modelflight.com.au/kokam_...po_battery.htm
Scroll down on the list to a 2000mA 7.2V, get two of those and you'll do just fine.

Cosmin Rotaru · May 12th, 2005, 03:45 AM

lead-acid are good when you need to deliver current FAST (high current drain). Like starting your engine car.
They're also discharging fast(er than Li-Ion) when not in use...
I'm using one to power an on camera light (50W).

Patrick Jenkins · May 13th, 2005, 12:04 PM

4.2 amps vs 3 amps. Not knowing how many watts the VX1000 uses I can't accurately predict how much longer (probably more than an hour), but the Bescor SLA will def. allow you longer run times.

Prospective DIYers:
I actually use off the shelf 12V 7 amp radioshack SLA batteries ($20) + a custom wired DC<>DC convertor ($15 at any Walmart; brings 12v down to around 8Vish) all sitting in a small fanny pack (like the Bescor). Throw in a $25 6V/12V 1.5Amp automatic trickle charger from any automotive store (make sure it's automatic & no greater than 1.5Amp) and you're good to go. I get ~ 10-11 hours of runtime on little Canon Opturas and ~ 7-8 hours on a JVC HD1/HD10.

May 11th, 2005, 07:27 AM	#1
Chris Hink New Boot Join Date: Aug 2004 Location: Burbank, CA Posts: 24	difference in lead-acid & Lithium batteries? I need to get new batteries for my Vx1000. I was going to get the standard Sony info-lithium NP-730H but I noticed at B&H they also have a brand called Bescor that is a 'Lead-acid' battery for the same price. Here's their descriptions: Bescor JB-5DNC Lead-Acid Battery Pack (8v, 4.2amps) Sony NP-F730H, L Series, Info-Lithium, Battery Pack (7.2v, 3000mAh) What is the real world difference with these?

May 12th, 2005, 03:45 AM	#3
Cosmin Rotaru Major Player Join Date: Feb 2003 Location: Romania, Timisoara Posts: 453	lead-acid are good when you need to deliver current FAST (high current drain). Like starting your engine car. They're also discharging fast(er than Li-Ion) when not in use... I'm using one to power an on camera light (50W). __________________ Cosmin Rotaru

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May 11th, 2005, 08:05 AM	#2
Dan Diaconu Major Player Join Date: Dec 2004 Location: Vancouver, Canada Posts: 804	Lead-acid is the same kind as found on cars, wheel chairs, etc. http://www.batteryuniversity.com/partone-6.htm http://hyperphysics.phy-astr.gsu.edu.../leadacid.html Biggest, heaviest/power delivered. Slow descharge (linear) vs. log on lithium. Stick with lithium.(cell phones use LiIon not lead-acid and they're OK) Li polymer deliver many times what the LiIon can due to "sponge-like" surface of electrolites vs plane surface.For the same reason, the power and charging time are supperior to anything previously sold. http://www.allegromicro.com/techpub2/cadex/index35.htm http://www.modelflight.com.au/kokam_...po_battery.htm Scroll down on the list to a 2000mA 7.2V, get two of those and you'll do just fine.

May 13th, 2005, 12:04 PM	#4
Patrick Jenkins Major Player Join Date: Sep 2004 Location: Maryland, USA Posts: 382	4.2 amps vs 3 amps. Not knowing how many watts the VX1000 uses I can't accurately predict how much longer (probably more than an hour), but the Bescor SLA will def. allow you longer run times. Prospective DIYers: I actually use off the shelf 12V 7 amp radioshack SLA batteries ($20) + a custom wired DC<>DC convertor ($15 at any Walmart; brings 12v down to around 8Vish) all sitting in a small fanny pack (like the Bescor). Throw in a $25 6V/12V 1.5Amp automatic trickle charger from any automotive store (make sure it's automatic & no greater than 1.5Amp) and you're good to go. I get ~ 10-11 hours of runtime on little Canon Opturas and ~ 7-8 hours on a JVC HD1/HD10.