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Power-Sonic Batteries

Need to Know Information
The batteries on this page are called "sealed lead-acid" (SLA) batteries.  They are commonly incorrectly referred to as "gel-cell" batteries.

12 V vs. 14 V
There have been many discussions on the rec.aviation.soaring newsgroup in regard to whether it is better to use a 14V or 12V system in a glider.  Those in favor of 14V systems seem to like the extra power - especially for aircraft radios which can have degraded performance as the voltage drops.  I, however, am not a fan of 14V systems.  I prefer to install 2  12V batteries in my gliders.  I switch to the backup battery if the first one gets low.  The downside to using a 14V system is that it is difficult to balance the batteries.  Putting a 12V and 2V in series will get you to 14V, but charging them while connected in series seldom works well.  Ideally you should balance the batteries so that they have the same Ah (Amp x hour) rating.  For example, I sell a 2V battery (for anyone that insists on using them) that is a 6 Ah battery.  The Ah rating is close to the 7 Ah battery I sell, but not quite the same.  Charging the 12V, 7 Ah battery and the 2V, 6 Ah battery in series with a 14 V charger may work OK, but the battery with the smaller Ah rating will die prematurely.  If you use 2 of the 2V, 6 Ah batteries in parallel (giving 2V and 12 Ah) and put the combination in series with a large 12V, 12 Ah battery, it may work OK, but it is likely that one battery will get the majority of the charger's current and die prematurely.  I am not an expert on batteries, but I have seen this problem first hand.  In my case the 2 Ah batteries died in less than a single soaring season.  They were then pulling down the 12V battery.  Therefore I strongly recommend 12V systems.  The other disadvantage of using 14V systems is that 14V chargers are less common and therefore more expensive.  I don't offer any. 

Charging Rates and Times
A standard overnight recharge is normally recommended for typical lead-acid batteries.  This is based on a C/10 charge rate.  (C=Ah capacity of your battery).  For example.  The recommended charge rate for a 7 Ah battery is 700 mA.  Battery manufacturers publish maximum in rush rates for their batteries. 

If a faster recharge time is required, the following formulas can be used to determine either the correct charge rate or the time required to recharge your battery to 90% of capacity.  The Ah rating of the battery x 1.2  divided by the charging circuit max current, equals the amount of time (in hours) required to recharge the battery to 90%. These times are based on a fully discharged battery.  For 100% recharging, add 3 hours "float" time to the charging time.  If the battery is only partially discharged, the recharge time will be shorter.

Recharge Time (hours) =

1.2 x Battery Capacity (Ah)
Charging Current max (Amps)

(add 3 hours for 100% charge)

The rule of thumb is approximate however and battery data from the manufacturer is the best way to determine the maximum charge rate for a given battery.  The 800 mA charger from Xenotronix has been "blessed" by the battery manufacturer for use with the 5 Ah and 7 Ah batteries on this page.

Storage
It is best to keep sealed-lead acid batteries charging when not in use.  If it sits on the shelf for many months without charging it may be damaged.


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Lead-time

PS-12140 Power-Sonic PS-12140 Battery, Sealed Lead-Acid, 12V, 14.0 Ah
This is a nice large battery for use in gliders with many electronic gadgets.  Absorbent Glass Mat (AGM) technology for superior performance.
Connectors: "FASTON" quick disconnect tabs (0.250" x 0.032"), mate with AMP. INC. FASTON "250", See the AMP-FASTON-250.
Dimensions:
Length: 5.95 inches (151 mm)
Width: 3.86 inches (98 mm)
Height" 3.70 inches (94 mm)
Height over Terminals: 3.94 inches (100 mm)
Approximate Weight: 9.0 pounds (4.09 kg)

Charging
Cycle Applications: Limit initial current to 4.2A. Charge until battery voltage (under charge) reaches 14.4 to 14.7 volts at 68°F (20°C). Hold at 14.4 to 14.7 volts until current drops to under 140mA. Battery is fully charged under these conditions, and charger should be disconnected or switched to “float” voltage.
“Float” or “Stand-By” Service:  Hold battery across constant voltage source of 13.5 to 13.8 volts continuously. When held at this voltage, the battery will seek its own current level and maintain itself in a fully charged condition.

Note: Due to the self-discharge characteristics of this type of battery, it is imperative that they be charged within 6 months of storage, otherwise permanent loss of capacity might occur as a result of sulfation.

Data Sheet:
PS-12140.pdf

   $49.95 In Stock
PS-1290 Power-Sonic PS-1290 F2 Battery, Sealed Lead-Acid, 12V, 9.0 Ah
This is the standard battery size used in most gliders.  Fits into the Dittel Battery Box.  Absorbent Glass Mat (AGM) technology for superior performance.
Connectors: "FASTON" quick disconnect tabs (0.250" x 0.032"), mate with AMP. INC. FASTON "250", See the AMP-FASTON-250
Dimensions:
Length: 5.95 inches (151 mm)
Width: 2.56 inches (65 mm)
Height" 3.7 inches (94 mm)
Height over Terminals: 3.86 inches (98 mm)
Approximate Weight: 5.70 pounds (2.59 kg)

Charging
Cycle Applications: Limit initial current to 2.7A. Charge until battery voltage (under charge) reaches 14.4 to 14.7 volts at 68º F (20º C). Hold at 14.4 to 14.7 volts until current drops to approximately 90mA. Battery is fully charged under these conditions, and charger should either be disconnected or switched to "float" voltage.
"Float" or "Stand-by Service": Hold battery across constant voltage source of 13.5 to 13.8 volts continuously. When held at this voltage, the battery will seek its own current level and maintain itself in a fully charged condition.

NOTE: Due to self-discharge characteristics of this type of battery, it is imperative that they be charged within 6 months of storage, otherwise permanent loss of capacity might occur as a result of sulfation.


Data Sheet:
ps-1290.pdf

Optional Battery Box - Dittel H00217
This is an extremely rugged and handy battery box.  This box offers stainless steel construction, a very useful battery voltage level indicator and a circuit breaker for battery protection. A mounting plate is included. It is easy to remove the battery box from the mounting plate - so you can quickly remove the battery from the aircraft for charging. It is somewhat expensive, but worth the price. It works great with this battery.

Optional Goddard-BC-P22 Battery Harness with Fuse, FASTON Connectors, and Powerpole Connectors - Highly Recommended
It is very important to have a fuse mounted directly on the battery to avoid the possibility of fire in the case of a short in the sailplane wiring or electronics. We offer a high-quality solution from Goddard. It simplifies installation and is "plug and play". It includes insulated FASTON connectors for easy connection to the battery terminals, a built-in automotive fuse holder and 5A fuse, Tefzel aircraft wire, and easy to use Anderson Powerpole connectors. An extra connector is included for connection to the glider electrical system, or to the battery charger.

Recommended Battery Harness: Goddard-BC-P22

   $34.95 In Stock
PS-1251FP Power-Sonic PS-1251FP Battery, Sealed Lead-Acid, 12V, 5.4 Ah
This is the perfect battery for a "portable" system including a Pocket PC and GPS flight recorder.   I use one to power my Cambridge 302A which then powers my iPAQ.  I have another one that I use to power  GPS-NAV and Compaq Aero 1550.
Connectors:
  • Positive terminal: "FASTON" quick disconnect tab (0.250" x 0.032"), mate with AMP. INC. FASTON "250", See the AMP-FASTON-250.
  • Negative terminal: "FASTON" quick disconnect tabs (0.187" x 0.020"), mate with AMP. INC. FASTON "187", See the AMP-FASTON-187.

Dimensions:
Length: 5.50 inches (139.7 mm)
Width: 1.89 inches (48 mm)
Height" 4.02 inches (102 mm)
Height over Terminals: 4.06 inches (103 mm)
Approximate Weight: 4.20 pounds (1.9 kg)

Charging
Cycle Applications: Limit initial current to 1.6A. Charge until battery voltage (under charge) reaches 14.40 to 14.70 volts at 68º F (20º C). Hold at 14.40 to 14.70 volts until current drops to approximately 54mA. Battery is fully charged under these conditions, and charger should either be disconnected or switched to "float" voltage.
"Float" or "Stand-by Service": Hold battery across constant voltage source of 13.50 to 13.80 volts continuously. When held at this voltage, the battery will seek its own current level and maintain itself in a fully charged condition.

NOTE: Due to self-discharge characteristics of this type of battery, it is imperative that they be charged after 6-9 months of storage, otherwise permanent loss of capacity might occur as a result of sulfation.

Data Sheet: ps-1251fp.pdf

   $27.95 In Stock
PS-1229 Power-Sonic PS-1229 Battery, Sealed Lead-Acid, 12V, 2.9 Ah
This is the perfect battery for a "portable" system including a GPS only, or Pocket PC only.  I don't recommend it for a system with both a GPS and Pocket PC.
Connectors: "FASTON" quick disconnect tabs (0.187" x 0.020"), mate with AMP. INC. FASTON "187".  See the AMP-FASTON-187.
Dimensions:
Length: 7.01 inches (178 mm)
Width: 1.38 inches (35 mm)
Height" 2.38 inches (61 mm)
Height over Terminals: 2.60 inches (66 mm)
Approximate Weight: 2.60 pounds (1.18 kg)

Charging
Cycle Applications: Limit initial current to 900mA. Charge until battery voltage (under charge) reaches 14.40 to 14.70 volts at 68º F (20º C). Hold at 14.40 to 14.70 volts until current drops to approximately 29mA. Battery is fully charged under these conditions, and charger should either be disconnected or switched to "float" voltage.
"Float" or "Stand-by Service": Hold battery across constant voltage source of 13.50 to 13.80 volts continuously. When held at this voltage, the battery will seek its own current level and maintain itself in a fully charged condition.

Data Sheet: ps-1229.pdf

$26.95 In Stock

Cumulus Soaring, Inc.
Paul E. Remde

8661 Connelly Place
Savage, Minnesota 55378
USA


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