X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=doc%2Faltusmetrum.xsl;h=aa218c5cc598fffa26f33479ecc2cc8d2816a4d6;hp=b2677a029ed9c66f3c33b3861fddb0382ece3ee0;hb=4925a6f2f4edd5b54641a5240030e5c0e3e95db6;hpb=6fa1ec0dbf2a4eda8d061c67b3779b83b88f29f0

diff --git a/doc/altusmetrum.xsl b/doc/altusmetrum.xsl
index b2677a02..aa218c5c 100644
--- a/doc/altusmetrum.xsl
+++ b/doc/altusmetrum.xsl
@@ -277,6 +277,17 @@ NAR #88757, TRA #12200
       apogee and main ejection charges.  All Altus Metrum products are 
       designed for use with single-cell batteries with 3.7 volts nominal.
     </para>
+    <para>
+      The battery connectors are a standard 2-pin JST connector and
+      match batteries sold by Spark Fun. Other vendors sell similar
+      batteries for RC aircraft using mating connectors, however the
+      polarity for those is generally reversed from the batteries used
+      by Altus Metrum products. In particular, the Tenergy batteries
+      supplied for use in Featherweight flight computers are not
+      compatible with Altus Metrum flight computers or battery
+      chargers. <emphasis>Check polarity before connecting any battery
+      not purchased from Altus Metrum or Spark Fun.</emphasis>
+    </para>
     <para>
       By default, we use the unregulated output of the Li-Po battery directly
       to fire ejection charges.  This works marvelously with standard
@@ -2199,7 +2210,7 @@ NAR #88757, TRA #12200
 	</listitem>
 	<listitem>
 	  <para>
-	    RF interface for battery charging, configuration, and data recovery.
+	    RF interface for configuration, and data recovery.
 	  </para>
 	</listitem>
 	<listitem>