diff --git a/hardware/bq25185.pdf b/hardware/bq25185.pdf
deleted file mode 100644
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Binary files a/hardware/bq25185.pdf and /dev/null differ
diff --git a/hardware/lora-module.md b/hardware/lora-module.md
index a08d609..65ed5df 100644
--- a/hardware/lora-module.md
+++ b/hardware/lora-module.md
@@ -13,8 +13,6 @@ Includes:
 * BLE
 
 ## POWER ANALYSIS
-RAK19003/19007 max power consumption: 130 mA (@3.7 V assumed) = 481 mW
-* 92 mA from the 4631 at full TX
-* 38 mA from connected sensor boards
-typical 18650 battery: 3000 mAh @ 3.7V -> 11,100 mWh
-runtime: batt_capacity/power_consumption = 23 h per 18650 cell
+max power consumption: 12.5mA (@3.6V assumed) = 46.25mW
+battery: 5900mAh @ 3.7V -> 21830mWh
+runtime: batt_capacity/power_consumption = 472h
diff --git a/hardware/power.md b/hardware/power.md
index dc688aa..c76b59e 100644
--- a/hardware/power.md
+++ b/hardware/power.md
@@ -1,41 +1,26 @@
 # BATTERY
-* 1S LiIon/LiPo (3.7 V nominal)
-* 18650 for easy ubiquitous availability (~3,000 mAh each)
-* connect cells in parallel until we get the capacity we want
 * lipo can charge at 1C
+* 5900mAh -> 5.9A
+
+Strawman design proposal: 1S LiPo, 18650 for easy ubiquitous availability
+(~3,000 mAh).  Add cells in parallel until you get the capacity you want.
 
 ## CELLS
 [INR18650-35E](https://lygte-info.dk/review/batteries2012/Samsung%20INR18650-35E%203500mAh%20%28Pink%29%20UK.html)
 
-
-# POWER BOARD
-[Adafruit 6091](https://www.adafruit.com/product/6091)
-* $7
-* 5-18V input, USB-C or PV/DC
-* CC at 1.0 A, 0.5 A, or 0.25 A
-* handles LiPo/LiIon or LiFePo cells
-* optional thermistor to reduce charge current when battery overheats
-* battery under voltage protection disconnects the battery from the load at 3 V
-* [schematic](https://learn.adafruit.com/adafruit-bq25185-usb-dc-solar-lithium-ion-polymer-charger/downloads#schematic-and-fab-print-3188140)
-
-Max charge rate is 1 A at 3.7 V nominal battery voltage, which is 3.7 W.
-
-
-# PHOTOVOLTAIC PANEL
-
-Anything 5-18 V should be fine, the charger can't use more than 3.7 W.
-
-Trying this one: <https://www.amazon.com/Soshine-6w-Performance-Monocrystalline-Cellphone/dp/B09ZL3F7CT?th=1>
-
-
-# ALTERNATIVE POWER BOARDS
-
 ## CHARGERS
 1. [5V 2A USB-C](https://www.amazon.com/DWEII-Converter-Step-Up-Charging-Protection/dp/B09YD5C9QC/)
 2. [5V 2A](https://www.amazon.com/Ruiwaer-Discharge-Integrated-Adjustable-Charging/dp/B08QHVW5J8)
     * have on hand (i think)
 3. [Adjustable](https://www.amazon.com/Lithium-Battery-Charger-Charging-Converter/dp/B089NG9TFW)
     * combine with [heatsink](https://www.amazon.com/Printer-Heatsink-Thermal-Conductive-Adhesive/dp/B07RKHRHJV)
+4. [Adafruit 6091](https://www.adafruit.com/product/6091)
+    * $7
+    * 5-18V input, USB-C or PV/DC
+    * CC at 1.0 A, 0.5 A, or 0.25 A
+    * handles LiPo/LiIon or LiFePo cells
+    * optional thermistor to reduce charge current when battery overheats
+    * [schematic](https://learn.adafruit.com/adafruit-bq25185-usb-dc-solar-lithium-ion-polymer-charger/downloads#schematic-and-fab-print-3188140)
 
 strawman: charging up to 4v with the INR18650 (see `CELLS:INR18650-35E` for the discharge capacity graph, and `CHARGERS:3` for 4V cutoff w/ a 5V panel) gives us ~3000mAh, or 88% of the 3398mAh tested battery life.
 
@@ -46,3 +31,4 @@ strawman: charging up to 4v with the INR18650 (see `CELLS:INR18650-35E` for the
 * mppt charge controllers:
 1. <https://www.amazon.com/Waveshare-Solar-Power-Manager-Regulated/dp/B0CT2ZBML9>
 2. <https://www.amazon.com/4-4-6-5V-Lithium-Battery-Charger-Controller/dp/B08DY28BXW>
+