Voltage is important because the voltage of the battery must match the application requirements of the device. Voltage is simply a unit of measuring electrical pressure, and all batteries are rated in volts DC (Direct Current). Think of water flowing down a river. Voltage is how quick that water is flowing, where as amperage is the amount of water flowing. The more voltage the stronger the flow of the water. The more amperage, the more water flowing.
Battery Chargers on following page

Digital DC Voltage Monitor
Self-Powered LCD Display, +6.50 to +18.00Vdc,

Digital DC Voltage Monitor is self-contained, self-powered, dc voltage monitors set new standards for quality, performance, size and cost. Simply apply power to the two rear terminals and the unit is operational. No additional components are required! The large, 0.37"/9.4mm, LCD display, with built-in "VDC" annunciator, can be easily read from 10 feet. 12Vdc nominal operation (+6.50-18.00V range, 0.01V resolution). Reverse polarity protection is standard. The DMS-20LCD-DCM utilizes a precision analog-to-digital converter and ultra-stable passive components to achieve excellent performance over the operating temperature range of 0 to +60°C. A rugged, ABS plastic package provides excellent protection against shock and vibration.  Without a doubt the most cost-effective, LCD-display, digital voltmeters available anywhere, at any price.

Current Consumption 3mA (max.)
$46.00

Panel mount
"Battery status meter"


click on thumbnail image above to see my own (new) Hornet panel with Battery status meter installed
"click on image for description"
New, small, simple battery status meter.
 At a glance see what condition your battery is in at all times.
Indicator full left 13+ Volts
Indicator center (left edge of silver)battery level is low 11.2 volts, turn off all unnecessary equipment
indicator in the red, battery should be considered dead, charge as soon as possible
easy to install, fits in any panel with only 1/2" needed for mounting!
$29.95

VOLTMETER

 2 1/4" Panel mount Voltmeter fits in standard instrument hole Registers from  6-16vdc
a momentary PTT "push-to-test", (not included) switch can be easily installed for checking battery condition
Low cost, just $44.50

Excellent Quality and Economy priced Batteries for 12 and 14 volt applications

Build a higher voltage high capacity 14 Volt battery pack
especially suited for older radios that typically work better at higher voltages
(2) PS4100 4 Volt 10 Amp Hr. + (1) PS-6100 6 Volt 10aH
or
(1) PS-1272 12V 7.2 aH + (1) PS-260  2 Volt 6aH

2 Volt

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PS-260 1.97" x 1.34" x 3.94" (0.86 lbs.) 2 Volt 6aH...$24.95
 

4 Volt

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PS-4100 10 Amp Hr. 4.02"x1.97"x3.72" (3.1lbs) ......$27.55
 

6 Volt

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PS-670 5.95" x 1.34" x 3.70"(2.80 lbs.) 6Volt 7aH.....$25.50
PS-6100 5.95"x2.00"x3.70" (4.6lbs) 6 Volt 12aH.......$28.95
 

12 Volt
PS-1229

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 7.01"x 1.34"x 2.60" (2.10 lbs) 12V 2.9aH...$34.00
(The PS1229 are typical of many sailplane tail batteries)

PS-1272
12 Volt 7.2 AH

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L: 5.95 (151) W: 2.56 (65) H: 3.70 (94) HT: 3.86 (98)
5.80 lbs. (2.63 kg)
$34.95
 

NEW HIGH-RATE BATTERIES
More Amp Hours in the same size package
PS-1290 F2
 
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12 Volt 9.0 Amp. Hrs.
Same size but more capacity than most common 6.5 - 7 Amp Hr batteries
Features: Absorbent Glass Mat (AGM) technology for superior performance. Valve regulated, spill proof construction allows safe operation in any position. Power/volume ratio yielding unrivaled energy density. Rugged plastic case and cover Approved for transport by air. D.O.T., I.A.T.A., F.A.A. and C.A.B. certified. U.L. recognized under file number MH 20845. 5.95" x 2.56" wide x 3.70" high (3.86 over terminals and 6.10 pounds
$39.95

PS-1282S 8.0 Amp Hr.
 
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3.86"x 4.40"x 4.65"(6.7 lbs)
(The PS-1282S fits quite nicely in the Libelle Battery box)
 $54.95


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PSH-12100 12 Volt 10.5 Amp. Hrs.
5.95"L x 4.37"* H x 2.56" W *4.61" over terminals 7.00 lbs. (3.18 kg)
designed specifically for applications such as uninterruptible power supplies where short duration high-rate discharge currents are required. The PSH12100 has the same footprint as the PSH-1280, but with the extra height pushes the capacity envelope to an amazing 10.5AH! Features: Absorbent Glass Mat (AGM) technology for superior performance. Designed specifically for high-rate discharge (UPS) applications.  41 Watts/cell for 15 min. of constant power Rugged plastic case and cover. Approved for transport by air. D.O.T., I.A.T.A., F.A.A. and C.A.B. certified. U.L. recognized under file number MH 20845.
$49.95

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PS-12100F2 12 Volt 12.0 Amp. Hrs.
PowerSonic PS12100F2, 12V, 12.0Ah, Sealed Lead-Acid Battery, Maintenance-free, Terminal Type: F2, Quick Disconnect Tabs, Mates with AMP. Inc. Faston "250" Series, Length 6.0", Width 4.4", Height 3.7", Wt-9.2 lbs.
$52.95

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PS12140 12 Volt 14.0 Amp Hrs
L: 5.95 (151) W: 3.86 (98) H: 3.70 (94) HT: 3.94 (100)
$62.00

NOTE: These are ALL Non-Spillable, Re-Chargeable Sealed-Lead Acid Batteries. The term GEL-CELL is frequently, but improperly used to describe this type battery.
CHARGING: Cycle Applications: Limit initial current to 2.16A. Charge until battery voltage (under charge) reaches 14.40 to 14.70 volts at 68oF (20oC). Hold at 14.40 to 14.70 volts until current drops to approximately 72mA. 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 the 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.
We highly recommend the R&R chargers and have used this type here for years, R&R Chargers are designed for just this purpose and battery type. With this type charger and proper charging practices these batteries give years or dependable service and maintain high capacity.

Walter Dittel battery box

Similar to Filser battery box but made of stronger Stainless Steel and high grade powder coated steel construction complete with voltmeter and DIN Connector outlet socket and one mating DIN connector plug *, Voltmeter with PTT (push to test) button and circuit breaker. Battery is NOT included but accepts most common 12 volt batteries of 6.5 -8.0 Amp hr. like Powersonic batteries listed above or commonly available batteries from many manufacturers.
$289.00
DIN Connectors available $14.00 each
Please note; the 2 pin DIN connectors previously used on WD Battery box are no longer available and have been replaced with new 3 pin connectors as seen in this image below and fit the new battery boxes only, not interchangable.

old type (left) had large plastic centering blade
mew type on right has 3 pins

Battery Chargers on following page

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