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5800BA Battery Adapter

Batteries for
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Description

The 5800BA is a battery adapter that allows using 8 "AA" cells to replace the BA-5800/U 6 Volt Non-rechargable LiSO₂ chemistry primary battery (NSN 6135-01-440-7774, NATO stock number Z8/6665-99-760-9742). This adapter is being sold as a commercial part, but is identical to Rockwell Collins p/n 221-0135-020 (NSN 6160-01-385-4358).

There are two diodes used to combine the two strings of 4 "AA" batteries. These diodes prevent any charging current from reaching the batteries in the holder thus preventing charing of Alkaline cells as a safety measure.. This adapter can NOT be used for charging applications.

The Rockwell Collins AN/PSN-11 PLGR GPS receiver (HNV-500C) is the most common place the 5800BA adapter is used, but it also fits other applications.

These are in stock and typically ship within 2 business days of payment receipt.

The 5800BA can be used with either 4 each "AA" cells or with 8 each "AA" cells.

Relative Capacity

The BA-5800/U is a LiSO₂ chemistry battery with a capacity of about 44 Watt Hours.
If 8 Alkaline "AA" cells are used in the adapter the capacity will be about 34 Watt Hours.
If 8 Ni-MH batteries are used (2.25 Amp Hour type) the capacity will be about 22 Watt Hours. The life cycle cost of using rechargeable batteries is much lower than using primary batteries, but at a higher initial cost.
Of course the capacity changes with the current drawn from the battery, it's not constant, so there are just ball park numbers.

Where BA-5800/U is Used

ASN-169 (SAGR) Stand Alone air GPS Receiver (Probably only with the large battery box that takes the BA5800 battery.)
PSG-7(V)1 PSG-7(V)2
PSN-8
CAM - but the stock adapter does not work, one modified as shown below may work.
Rockwell Collins GPS receiver PSN-11 ( PLGR) (HNV-500C) Precision Lightweight GPS Receiver
CP-1995/U (SHTU)

Where stock BA5800 Battery Adapter does not work

CAM Chemical Agent Monitor, UK version

The CAM requires a battery that is less than 1.4" in diameter. The stock BA5800 battery adapter is 1.445" across the diagional when all 8 batteries are installed. With only 4 "AA" cells installed it's 1.410 and will fit, but then does not have enough current capbiliity.

With 4 "AA" cells in a square pattern the maximum diameter circle that will enclose them is 1.398" which would fit the CAM battery compartment, but this would require a new battery adapter design optimized for this very compact size or a mod.

Two slots have been moto tooled to allow the batteries to touch each other and the "ears" have been slightly thinned. This modified adapter measures <1.4" O.D., but it has not been tested in an application.
Once this modification has been made the adapter is very weak and if stored under compression, like in a PLGR, will distort.

Where BA-5800 is NOT Used

Trimble PSN-10 (SLGR) (Trimpack) Small Lightweight GPS Receiver
Note that the Trimble p/n 13828-00 "AA battery Adapter" battery box accepts a BA-5800 but a BA-5800 will NOT power the Trimble receiver.

The Trimble AA holder that fits the box looks very much like a BA-5800 battery adapter, BUT instead of having two concentric rings as the contacts it has two contact pads about 0.25 x 0.375". In order to get these small contacts to line up with the mating spring fingers the battery holder has a flat. If concentric rings were used there would be no need for an alignment flat. The reason for this non standard construction is that the Trimble battery holder connects all 8 AA cells in series providing a nominal 12 Volts with Alkaline cells. The Trimpack is rated for 8 to 32 Volts. When you try and run a Trimpack (p/n 14992-20) from a BA-5800 or my adapter you will get a "low battery" warning and the receiver shuts down.

The reason for the strange contact pads may be to prevent someone using the Trimble adapter in a PLGR or other application expecting a 6 Volt BA-5800.